Medicare Enrolled
Dr. Donald Nortman, MD
Nephrology · Los Angeles, 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. Nortman 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. Nortman?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Nortman
Dr. Donald Nortman is a nephrology specialist in Los Angeles, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Nortman performed 5,880 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Nortman received a total of $8,504 from 43 pharmaceutical and/or device companies across 276 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. Nortman 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 8% volume in CA
$8,504 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗5,880
Medicare services
Top 8% in CA for nephrology
Not available
Unique patients (not deduplicated)
$24
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 |
|---|---|---|---|
| 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. |
458 | $106 | $300 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
387 | $8 | $20 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
366 | $10 | $75 |
| Phosphate level test A blood test that measures the amount of phosphate in your body. Phosphate is a mineral that helps keep bones and teeth strong. |
359 | $5 | $25 |
| Uric acid level test A blood test that measures the level of uric acid in your body. Uric acid is a waste product formed when the body breaks down purines. |
351 | $4 | $25 |
| Magnesium level test A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess. |
345 | $7 | $25 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
344 | $8 | $25 |
| Erythrocyte sedimentation rate (ESR) test A blood test that measures how quickly red blood cells settle in a test tube to detect inflammation in the body. This specific method is performed manually rather than using an automated machine. |
311 | $4 | $25 |
| High-sensitivity C-reactive protein test A blood test that measures high-sensitivity C-reactive protein to detect infection or inflammation. |
256 | $13 | $50 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
220 | $29 | $100 |
| Ferritin level test (iron stores) A blood test that measures the level of ferritin, a protein that stores iron in the body. |
192 | $13 | $50 |
| Iron level test | 191 | $6 | $25 |
| Iron binding capacity test A blood test that measures the amount of iron in the blood and the blood's ability to bind and transport iron. |
190 | $9 | $25 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
170 | $16 | $50 |
| Free thyroxine (T4) test A blood test that measures the level of free thyroxine, a thyroid hormone, in the bloodstream. |
168 | $9 | $50 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
164 | $10 | $50 |
| 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. |
155 | $145 | $400 |
| Parathyroid hormone level test A blood test that measures the amount of parathyroid hormone in your body. This hormone helps regulate calcium levels in the blood and bones. |
148 | $40 | $150 |
| Folic acid level test A blood test that measures the amount of folic acid in the serum. |
147 | $14 | $50 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
144 | $13 | $75 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
139 | $15 | $100 |
| Natriuretic peptide level test A blood test that measures the level of natriuretic peptide, a protein produced by the heart and blood vessels. |
84 | $38 | $100 |
| PSA test (prostate cancer screening) | 70 | $18 | $75 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
68 | $3 | $25 |
| Urine microalbumin test (kidney screening) A laboratory test that measures the amount of microalbumin, a small protein, in a urine sample. This test is used to detect early signs of kidney damage. |
68 | $6 | $25 |
| Creatinine test (kidney function) A blood test that measures the amount of creatinine to assess kidney function or detect muscle injury. |
67 | $5 | $50 |
| 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. |
65 | $73 | $250 |
| Free T3 thyroid hormone test A blood test that measures the level of free triiodothyronine (T3) hormone in your body. This helps assess how well your thyroid gland is functioning. |
51 | $17 | $50 |
| 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. |
28 | $13 | $80 |
| New patient office visit, complex (60-74 min) | 28 | $182 | $800 |
| 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. |
25 | $48 | $150 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
17 | $8 | $50 |
| Cardiac enzyme level (CK-MB) test A blood test that measures the total level of creatine kinase, specifically the cardiac enzyme fraction, to help evaluate heart muscle damage. |
17 | $6 | $50 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
17 | $33 | $50 |
| Glutamyltransferase (GGT) level test A blood test that measures the level of the liver enzyme glutamyltransferase (GGT) to help evaluate liver health. |
16 | $7 | $25 |
| 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. |
15 | $71 | $165 |
| Sex hormone binding globulin level test A blood test that measures the level of sex hormone binding globulin, a protein that binds to sex hormones in the bloodstream. |
13 | $21 | $75 |
| Free testosterone level test A blood test that measures the amount of free testosterone in your body. Free testosterone is the portion of the hormone not bound to proteins and available for use by tissues. |
13 | $25 | $100 |
| Total testosterone level test A blood test that measures the total amount of testosterone in your body. This hormone is important for various bodily functions in both men and women. |
13 | $25 | $100 |
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.
Industry Payment Transparency
Open Payments through 2024 ↗$8,504
Total received (2018-2024)
Avg $1,215/year across 7 years
Top 12% in CA for nephrology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
43
Companies
276
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
$1,329
2023
$1,287
2022
$847
2021
$1,743
2020
$654
2019
$1,871
2018
$773
Payments by company (2024)
Ardelyx, Inc.
$237
Amgen Inc.
$235
AstraZeneca Pharmaceuticals LP
$151
Travere Therapeutics, Inc.
$151
Novartis Pharmaceuticals Corporation
$127
Bayer Healthcare Pharmaceuticals Inc.
$79
AKEBIA THERAPEUTICS INC
$69
GlaxoSmithKline, LLC.
$66
Otsuka America Pharmaceutical, Inc.
$53
Outset Medical Inc
$48
OPKO Pharmaceuticals, LLC
$45
Novo Nordisk Inc
$26
CALLIDITAS THERAPEUTICS US INC.
$23
CorMedix Inc.
$18
Top 3 companies account for 46.9% of 2024 payments
All-time payments by company (2018-2024) ›
Amgen Inc.
$1,833
AstraZeneca Pharmaceuticals LP
$1,377
Otsuka America Pharmaceutical, Inc.
$764
OPKO Pharmaceuticals, LLC
$528
Bard Peripheral Vascular, Inc.
$313
Ardelyx, Inc.
$267
Novartis Pharmaceuticals Corporation
$251
Horizon Therapeutics plc
$236
Travere Therapeutics, Inc.
$236
AKEBIA THERAPEUTICS INC
$235
Bayer HealthCare Pharmaceuticals Inc.
$224
Eisai Inc.
$190
Relypsa, Inc.
$184
GlaxoSmithKline, LLC.
$178
BARD PERIPHERAL VASCULAR, INC.
$144
Alexion Pharmaceuticals, Inc.
$140
Mallinckrodt Hospital Products Inc.
$132
Fresenius USA Marketing, Inc.
$123
Bayer Healthcare Pharmaceuticals Inc.
$107
Novo Nordisk Inc
$95
Calliditas Therapeutics US Inc.
$94
Vifor Pharma, Inc.
$91
Mallinckrodt Enterprises LLC
$84
Medicure Pharma Inc.
$77
ANI Pharmaceuticals, Inc.
$70
CALLIDITAS THERAPEUTICS US INC.
$69
Intuitive Surgical, Inc.
$60
Outset Medical Inc
$48
Daiichi Sankyo Inc.
$43
Takeda Pharmaceuticals U.S.A., Inc.
$35
Gilead Sciences, Inc.
$34
Boston Scientific Corporation
$32
Exact Sciences Corporation
$29
Shire North American Group Inc
$22
Keryx Biopharmaceuticals, Inc.
$22
Ultragenyx Pharmaceutical Inc.
$21
Boehringer Ingelheim Pharmaceuticals, Inc.
$21
Arbor Pharmaceuticals, Inc.
$20
Amarin Pharma Inc.
$20
CorMedix Inc.
$18
ARBOR PHARMACEUTICALS, INC.
$17
bioMerieux
$15
Currax Pharmaceuticals LLC
$11
Top 3 companies account for 46.7% of all-time payments
Associated products mentioned in payments ›
ACTHAR · AURYXIA · Aimovig · Auryxia · BRILINTA · CONTRAVE · Cologuard Collection Kit · Crysvita · Da Vinci Surgical System · Dayvigo · DefenCath · Edarbi · FARXIGA · GATTEX · IBSRELA · INJECTAFER · JARDIANCE · JESDUVROQ · JYNARQUE · KRYSTEXXA · Kerendia · LEQVIO · LOKELMA · Otezla · Ozempic · PURIFIED CORTROPHIN GEL · Parsabiv · RAYALDEE · Rayaldee · Repatha · SAMSCA · SOLIRIS · SYMBICORT · TARPEYO · Trintellix · Vascepa · Veltassa · WATCHMAN · WavelinQ · Wegovy · XPHOZAH 30 MG · ZYPITAMAG
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
Nephrologists in nearby ZIP areas
346
County median income
$87,760
Nearest hospital to ZIP centroid (approximate)
CEDARS-SINAI MEDICAL CENTER
0.0 mi
0.0 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. Nortman is a mixed practice specialist, with above-average Medicare volume (top 8% 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. Nortman experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Nortman performed 458 office visit, established patient (30-39 min) 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. Nortman receive payments from pharmaceutical companies?
Yes. Dr. Nortman received a total of $8,504 from 43 companies across 276 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. Nortman's costs compare to other nephrologists in Los Angeles?
Dr. Nortman's average Medicare payment per service is $24. 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. Nortman) 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
Specialty guide
Understanding Nephrology
Common procedures, typical costs, and what industry payments mean in nephrology.
Same specialty & city
Nephrologists in Los Angeles
Browse nephrologists in Los Angeles ranked by procedure volume and transparency data.
Highest volume
Top Nephrologists in CA
Nephrologists ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Nephrologists in CA
Which CA nephrologists receive the most from drug and device companies.
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.
By company
Otsuka America Pharmaceutical, Inc. Payments to Doctors
See all physicians who received payments from Otsuka America Pharmaceutical, Inc.
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