Mark S. Romoff, M.D.
Nephrology Physician · Van Nuys, CA
Mark S. Romoff, M.D. is a nephrology physician with a practice address in Van Nuys, California, and NPI 1578543179, issued on Jan 19, 2006. Check the license (California G27803, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark S. Romoff
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- G27803 CA
Self-reported in NPPES; status is on the state search - Practice location
- 15211 Vanowen St, Van Nuys, CA 91405
- Phone
- (818) 787-2410
- Enumerated
- Jan 19, 2006
- Record last updated
- Sep 13, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (818) 756-0723
- Medicare enrollment
- Enrolled (PECOS I20100518000231); accepts Medicare assignment
- Medical or professional school
- Medical College Of Georgia School Of Medicine, 1973
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 15211 Vanowen St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Raj Ahluwalia, M.D.Orthopaedic Surgery Physician1306992904
- Emmett Berg, D.O.Adult Medicine Physician1942382007
- Christopher Clauss, P.T.Physical Therapist1487934873
- Rosemarie Fussell, RPTPhysical Therapist1669554754
- Eun Hwang, M.D.Pediatrics Physician1306938998
- Timothy Jones, PACPhysician Assistant1437231164
Verify Mark S. Romoff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G27803Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.1 times the Medicare Part D claims of the average nephrology physician in 2024
7,422 Medicare Part D claims for 715 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 251 claims were for opioids.
Most prescribed
- Atorvastatin Calcium573 claims
- Levothyroxine Sodium311 claims
- Amlodipine Besylate267 claims
- Metoprolol Succinate215 claims
- Rosuvastatin Calcium198 claims
- Alprazolam176 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 85.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $498.21
15 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Cedars-Sinai Medical Care FoundationVan Nuys, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark S. Romoff among 1,468 nephrology physician records in California
Mark S. Romoff, M.D. is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 48% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1973 · median 2001 among the 1,128 with a school on file
- Record last updated2017 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Van Nuys → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Hamid Sadeghi, M.D.Van Nuys, CA 914051184624785
- Balbir Singh, M.D.Van Nuys, CA 914051114013927
- Sumeet Singh, PA-CVan Nuys, CA 914051972332138
- Irma Harriman, M.D.Panorama City, CA 914021619976784
- Eduardo Lopez, M.D.Panorama City, CA 914021922201854
- Neda Poommipanit, M.D.Panorama City, CA 914021629205745
- Sheila Raj, MDPanorama City, CA 914021083762033
- Annie Suh, MDPanorama City, CA 914021659429488
Common questions
What is Mark S. Romoff, M.D.'s NPI number?
Mark S. Romoff, M.D.'s National Provider Identifier (NPI) is 1578543179, issued on Jan 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark S. Romoff, M.D. located?
The NPPES record lists a practice address at 15211 Vanowen St, Van Nuys, CA, 91405. Phone: (818) 787-2410. Providers update this record themselves, so call before visiting.
How can I verify Mark S. Romoff, M.D.'s license?
NPPES lists California license number G27803, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark S. Romoff, M.D. prescribe under Medicare Part D?
In 2024, Mark S. Romoff, M.D. had 7,422 Medicare Part D claims for 715 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is Mark S. Romoff, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.