Medicare Enrolled
Dr. Gregory Robertson, M.D.
Internal Medicine · Newport Beach, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Robertson from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
Are you Dr. Robertson?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Robertson
Dr. Gregory Robertson is an internal medicine specialist in Newport Beach, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Robertson performed 13,070 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Robertson received a total of $30,848 from 59 pharmaceutical and/or device companies across 1043 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Robertson is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 19 years of NPI registration
▲ Top 2% volume in CA
$30,848 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗13,070
Medicare services
Top 2% in CA for internal medicine
Not available
Unique patients (not deduplicated)
$20
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Romosozumab injection (Evenity) for osteoporosis | 9,660 | $8 | $16 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
640 | $103 | $145 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
405 | $76 | $125 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
302 | $12 | $35 |
| Venipuncture for blood draw Insertion of a needle into a vein to collect blood samples. This procedure is performed on patients aged 3 years or older. |
283 | $14 | $25 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
256 | $8 | $11 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
123 | $140 | $200 |
| Annual depression screening | 110 | $21 | $35 |
| Betamethasone steroid injection An injection containing a combination of betamethasone acetate and betamethasone sodium phosphate. |
108 | $5 | $21 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
107 | $12 | $50 |
| Flu vaccine, high-dose High-dose seasonal influenza vaccine for adults aged 65 and older. Contains four times the antigen of standard-dose flu vaccines (60 mcg per strain), split-virus formulation, preservative-free, single-dose syringe. |
96 | $71 | $77 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
96 | $32 | $42 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
90 | $47 | $65 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
65 | $145 | $196 |
| Zoledronic acid injection, 1 mg An injection of zoledronic acid administered at a dose of 1 mg. |
65 | $7 | $46 |
| Steroid injection (triamcinolone) A 10 mg injection of triamcinolone acetonide, a corticosteroid medication. This code specifies the drug and dosage administered. |
62 | $1 | $30 |
| CT scan of chest, without contrast A computed tomography scan of the chest area that uses X-rays to create detailed images without the use of contrast dye. |
59 | $120 | $212 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
54 | $3 | $10 |
| Injection, potassium chloride, per 2 meq | 47 | $0 | $25 |
| Complete ultrasound of retroperitoneum An ultrasound examination of the structures located behind the abdominal cavity. |
45 | $94 | $224 |
| Chest X-ray, 2 views An X-ray imaging test of the chest that captures two different angles to visualize the lungs, heart, and chest wall. |
38 | $29 | $74 |
| Joint fluid aspiration or injection, medium joint Removal of fluid from a medium-sized joint or injection of medication into the joint space. |
37 | $46 | $174 |
| Expiratory airflow and volume test A test that measures the amount of air you can exhale and the speed at which you can breathe it out. It evaluates lung function by assessing expiratory airflow and volume. |
36 | $22 | $60 |
| Ultrasound of head and neck soft tissue This procedure uses sound waves to create images of the soft tissues in the head and neck area. It allows for the visualization of structures beneath the skin without using radiation. |
31 | $103 | $175 |
| CT scan for bone mineral density A CT scan used to measure calcium and other minerals in the bone. This procedure assesses bone mineral content. |
30 | $15 | $60 |
| Destruction of precancerous skin growth, 1 Removal of a single precancerous skin growth. This procedure destroys abnormal skin cells to prevent them from developing into cancer. |
26 | $59 | $95 |
| Destruction of precancerous skin growths, 2-14 This procedure involves the removal or destruction of two to fourteen precancerous skin lesions. It is performed to eliminate abnormal skin cells that have the potential to develop into cancer. |
26 | $6 | $37 |
| Telephone medical discussion, 11-20 minutes A phone conversation with a physician lasting between 11 and 20 minutes. |
23 | $75 | $127 |
| Ear wax removal A procedure to remove impacted ear wax from the ear canal. |
20 | $40 | $60 |
| Knee X-ray, 3 views An X-ray imaging test of the knee joint that captures three different angles to evaluate the bones and surrounding structures. |
20 | $36 | $100 |
| X-ray of lower and sacral spine, minimum of 4 views An X-ray imaging test of the lower back and sacrum using at least four different angles to visualize the bones and joints. |
18 | $42 | $125 |
| Shoulder X-ray, 2+ views An X-ray imaging test of the shoulder joint using at least two different angles to visualize the bones and surrounding structures. |
18 | $32 | $65 |
| CT scan of abdomen and pelvis, without contrast A computed tomography scan that creates detailed images of the abdominal and pelvic organs. The procedure is performed without the use of intravenous contrast dye. |
18 | $164 | $233 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
17 | $120 | $195 |
| Intravenous infusion, 1 hour or less Administration of medication or fluid directly into a vein for therapeutic, preventive, or diagnostic purposes. The procedure lasts one hour or less. |
14 | $57 | $95 |
| Telephone medical discussion, 5-10 minutes A phone conversation with a physician lasting between 5 and 10 minutes to discuss medical matters. |
13 | $49 | $97 |
| CT scan of heart for calcium evaluation A CT scan of the heart used to evaluate calcium levels in the blood vessels. |
12 | $95 | $278 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. These counts do not measure clinical quality or years of experience.
0.1% high complexity
80.2% medium
19.7% routine
Industry Payment Transparency
Open Payments through 2024 ↗$30,848
Total received (2018-2024)
Avg $4,407/year across 7 years
Top 4% in CA for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
59
Companies
1,043
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$3,072
2023
$2,615
2022
$3,073
2021
$2,576
2020
$3,594
2019
$6,504
2018
$9,413
Payments by company (2024)
Lilly USA, LLC
$591
AstraZeneca Pharmaceuticals LP
$556
Vanda Pharmaceuticals Inc.
$439
Novo Nordisk Inc
$277
Amgen Inc.
$253
Corcept Therapeutics
$156
Esperion Therapeutics, Inc.
$151
Radius Health, Inc.
$144
ABBVIE INC.
$80
Pharming Healthcare, Inc.
$68
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$60
Sumitomo Pharma America, Inc.
$54
Boehringer Ingelheim Pharmaceuticals, Inc.
$52
Exact Sciences Corporation
$44
BioCryst US Sales Co., LLC
$30
Phathom Pharmaceuticals, Inc.
$24
Noven Therapeutics, LLC
$24
Xeris Pharmaceuticals, Inc.
$20
Alvogen Inc
$20
IDORSIA PHARMACEUTICALS US INC
$17
Azurity Pharmaceuticals, Inc.
$13
Top 3 companies account for 51.6% of 2024 payments
All-time payments by company (2018-2024) ›
Pharming Healthcare, Inc.
$6,204
Amgen Inc.
$3,330
AstraZeneca Pharmaceuticals LP
$3,232
Lilly USA, LLC
$2,706
Novo Nordisk Inc
$2,652
Amarin Pharma Inc.
$1,121
Janssen Pharmaceuticals, Inc
$1,030
PFIZER INC.
$937
Vanda Pharmaceuticals Inc.
$852
Radius Health, Inc.
$741
AbbVie Inc.
$663
AbbVie, Inc.
$633
Astellas Pharma US Inc
$578
Allergan, Inc.
$485
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$456
Teva Pharmaceuticals USA, Inc.
$422
SANOFI-AVENTIS U.S. LLC
$395
Merck Sharp & Dohme Corporation
$335
Allergan Inc.
$274
Boehringer Ingelheim Pharmaceuticals, Inc.
$235
Eisai Inc.
$218
ABBVIE INC.
$208
Takeda Pharmaceuticals U.S.A., Inc.
$208
Novartis Pharmaceuticals Corporation
$196
Esperion Therapeutics, Inc.
$195
IDORSIA PHARMACEUTICALS US INC
$187
Azurity Pharmaceuticals, Inc.
$174
Ironwood Pharmaceuticals, Inc
$163
Corcept Therapeutics
$156
GlaxoSmithKline, LLC.
$152
Regeneron Healthcare Solutions, Inc.
$134
NESTLE HEALTHCARE NUTRITION INC.
$125
Avanir Pharmaceuticals, Inc.
$124
ARBOR PHARMACEUTICALS, INC.
$122
Neurocrine Biosciences, Inc.
$121
Otsuka America Pharmaceutical, Inc.
$109
E.R. Squibb & Sons, L.L.C.
$105
Indivior Inc.
$100
Biohaven Pharmaceutical Holding Company Ltd.
$88
Alvogen Inc
$83
Shire North American Group Inc
$79
Exact Sciences Corporation
$60
Sumitomo Pharma America, Inc.
$54
BioCryst US Sales Co., LLC
$51
Shield Therapeutics Inc
$37
Alexion Pharmaceuticals, Inc.
$31
Arbor Pharmaceuticals, Inc.
$29
BioCryst Pharmaceuticals, Inc.
$29
Biohaven Pharmaceuticals, Inc.
$26
Bayer HealthCare Pharmaceuticals Inc.
$26
Phathom Pharmaceuticals, Inc.
$24
Noven Therapeutics, LLC
$24
Alfasigma USA, Inc.
$22
Xeris Pharmaceuticals, Inc.
$20
Hikma Pharmaceuticals USA
$19
Eyevance Pharmaceuticals LLC
$19
SANOFI PASTEUR INC.
$18
Bard Peripheral Vascular, Inc.
$16
Genentech USA, Inc.
$12
Top 3 companies account for 41.4% of all-time payments
Associated products mentioned in payments ›
ACCRUFER · AIRSUPRA · AJOVY · AUSTEDO · Adthyza · Aimovig · Androgel · BASAGLAR · BREZTRI · BREZTRI AEROSPHERE · CHANTIX · COLOGUARD · COLOGUARD DNA CAPTURE REAGENTS · CREON · Cologuard Collection Kit · DUZALLO · Dayvigo · ELIQUIS · EMGALITY · ENTRESTO · EUCRISA · EVENITY · Edarbi · FANAPT · FARXIGA · FLUBLOK QUADRIVALENT · FORTEO · GARDASIL 9 · GATTEX · GEMTESA · GVOKE HYPOPEN · HETLIOZ · HORIZANT · Horizant · INGREZZA · INVOKANA · JANUVIA · JARDIANCE · Kerendia · Korlym · LINZESS · LYRICA · MOUNJARO · MOVANTIK · MYRBETRIQ · Mitigare · Myrbetriq · NEXLETOL · NUCALA · NUEDEXTA · NURTEC ODT · ORLADEYO · Orilissa · Orladeyo · Otezla · Ozempic · PNEUMOVAX 23 · PRALUENT · PRALUENT ALIROCUMAB INJECTION · PREMARIN · Prolia · QULIPTA · QUVIVIQ · REXULTI · REYVOW · RUCONEST · RYBELSUS · Repatha · Rybelsus · SOLIQUA · STEGLATRO · SUBLOCADE · SYMBICORT · SYNTHROID · Saxenda · Strensiq · Synthroid · TERIPARATIDE · TRINTELLIX · TRULICITY · Tobradex ST · Tresiba · Trintellix · Tymlos · UBRELVY · VOQUEZNA · VRAYLAR · Vascepa · Venclose Maven Catheter · Veozah · Victoza · Wegovy · XARELTO · XIFAXAN · Xelstrym · Xofluza · ZENPEP
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Geographic Context
Internal medicine physicians in nearby ZIP areas
2,042
County median income
$113,702
Nearest hospital to ZIP centroid (approximate)
COLLEGE HOSPITAL COSTA MESA
2.8 mi
2.8 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Robertson is a mixed practice specialist, with above-average Medicare volume (top 2% in CA), with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Robertson experienced with romosozumab injection (evenity) for osteoporosis?
Based on Medicare claims data, Dr. Robertson performed 9,660 romosozumab injection (evenity) for osteoporosis services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Robertson receive payments from pharmaceutical companies?
Yes. Dr. Robertson received a total of $30,848 from 59 companies across 1,043 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Robertson's costs compare to other internal medicine physicians in Newport Beach?
Dr. Robertson's average Medicare payment per service is $20. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Robertson) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
Explore related providers
Same specialty & city
Internal Medicine Physicians in Newport Beach
Browse internal medicine physicians in Newport Beach ranked by procedure volume and transparency data.
Highest volume
Top Internal Medicine Physicians in CA
Internal medicine physicians ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Internal Medicine Physicians in CA
Which CA internal medicine physicians receive the most from drug and device companies.
By company
Pharming Healthcare, Inc. Payments to Doctors
See all physicians who received payments from Pharming Healthcare, Inc.
By company
Amgen Inc. Payments to Doctors
See all physicians who received payments from Amgen Inc.
By company
AstraZeneca Pharmaceuticals LP Payments to Doctors
See all physicians who received payments from AstraZeneca Pharmaceuticals LP.
About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology