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Dr. Mark S. Romoff, MD
NPI1578543179PAC ID3072641760
- Medicare services, 2024
- 10,649
- Medicare patients, 2024
- 707
- Part D claims, 2024
- 7,422
- Publications
- 1
- MIPS score, 2024
- 89
- Practice address
- 15211 W Vanowen St, Vannuys, CA 91405
- Practice phone
- Call (310) 385-3200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cedars-Sinai Medical Care Foundation
Vannuys, California
Find Dr. Romoff's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Mark S. Romoff is a nephrologist in Vannuys, California
Dr. Romoff practices at Cedars-Sinai Medical Care Foundation in Vannuys, California.
Dr. Romoff's NPI, 1578543179, was assigned on January 19, 2006. Dr. Romoff graduated from Medical College of Georgia in 1973. Dr. Romoff holds California license G27803.
NPI and contact details
- NPI
- 1578543179NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072641760
- NPI enumeration date
- January 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (310) 385-3200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 79
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark S. Romoff practices at Cedars-Sinai Medical Care Foundation in Vannuys, California
Dr. Romoff's primary practice is Cedars-Sinai Medical Care Foundation, at 15211 W Vanowen St, Vannuys, CA 91405 in Los Angeles County. The practice phone is (310) 385-3200.
- Cedars-Sinai Medical Care Foundation15211 W Vanowen St, Vannuys, CA 91405 · Los Angeles CountyPhone(310) 385-3200
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark S. Romoff is affiliated with 4 sites of care and 1 medical group
Dr. Romoff's primary practice is Cedars-Sinai Medical Care Foundation in Vannuys, California. Dr. Romoff is also affiliated with Cedars-Sinai Medical Center. The medical group on file is Cedars-Sinai Medical Group. Dmand AI also links Dr. Romoff to 1 more group practice or clinic and 1 home health agency, each named with a free account.
Cedars-Sinai Medical Care FoundationPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark S. Romoff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Romoff practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cedars-Sinai Medical Care Foundation | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Mark S. Romoff is one of 1,401 nephrologists in California
Nephrology is Dr. Romoff's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Romoff is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Romoff's licenses on file in 2 states: California and Georgia.
Specialties and state licenses
- Nephrology, CaliforniaPrimary
- Georgia license
Clinical focus
Dmand AI lists acute kidney failure, chronic kidney disease, fluid and electrolyte imbalances, gout, hypercalcemia and kidney disease among the conditions Dr. Romoff treats.
Nephrologists near Dr. Romoff
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
1,401nephrologists in California
3nephrologists in Vannuys
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mark S. Romoff billed Medicare for 10,649 services in 2024
CMS data shows 10,649 Medicare services from Dr. Romoff across 43 procedure codes in 2024, for 707 Medicare patients. Medicare paid $307,433 for them. Every service was in an office.
Medicare services, 202410,649
Medicare patients707
Paid by Medicare$307,433
Procedure codes43
Dr. Romoff's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 4,9012024: 5,1194%
- Drugs given in the office
- 2023: 2,6402024: 1,92027%
- Office and hospital visits
- 2023: 1,2702024: 1,42712%
- Surgery
- 2023: 9482024: 9322%
- Other services
- 2023: 4462024: 69055%
- Tests and treatments
- 2023: 4972024: 44510%
- Imaging
- 2023: 1192024: 1163%
Dr. Romoff compared with the California median for nephrologists, 2024
- Dr. Romoff
- California median
- Medicare services
- 10,649vs 1,0849.8 times
- Medicare patients
- 707vs 3072.3 times
- Part D claims
- 6,654vs 9557.0 times
Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.
Dr. Romoff's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Romoff?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Romoff and other nephrologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark S. Romoff treated 707 Medicare patients in 2024, average age 77
CMS counts 707 Medicare patients who saw Dr. Romoff in 2024. The largest group is 65 to 74, with 285 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.23, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Romoff's median patient age at 65, with 53% women.
Medicare patients, 2024707
Average age77
Average risk score1.23
Also on Medicaid12%
Dr. Romoff's Medicare patients by age, 2024
Dr. Romoff's Medicare patients by sex, 2024
- Women34148%
- Men36652%
Chronic conditions among Dr. Romoff's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Ischemic heart disease42%
- Diabetes28%
- Chronic kidney disease24%
- Osteoporosis24%
- Anxiety18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Romoff's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women53%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark S. Romoff wrote 7,422 Medicare Part D claims in 2024
In 2024, Dr. Romoff wrote 7,422 Medicare Part D claims for 715 patients. 87% of them were for generic drugs. CMS names the drug for 6,654 of them, across 122 drugs with 11 or more claims each, at $675,322 in total drug cost. In 2023, CMS named 6,490 claims across 125 drugs.
Part D claims, 20247,422
Drugs named by CMS122
Total drug cost$675,322
Part D patients715
Dr. Romoff's Part D claims by kind of drug, 2024
- Generic6,441 claims87%
- Brand-name946 claims13%
- Other35 claims0%
Dr. Romoff's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Romoff's Part D claims, 2024
- Opioids3%251 of 7,422 claims
- Antibiotics3%213 of 7,422 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6,4902024: 6,6543%
Drugs named by CMS: 122 in 2024, 125 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Mark S. Romoff scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Romoff for performance year 2024, reported as part of a group. Dr. Romoff accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Romoff as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Romoff's MIPS scores, performance year 2024
- 89of 100Final score
- 84.8of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 73of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Mark S. Romoff has 1 publication on record
Dmand AI links 1 paper to Dr. Romoff.
Papers1
Recent publications by Dr. Romoff
See who Dr. Romoff researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Romoff works with, so you can find a warm path to the right nephrologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark S. Romoff received $4,058 in industry payments from 2016 to 2025
CMS Open Payments shows 165 general payments to Dr. Romoff from 30 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Amgen Inc. paid the most, $802.
General payments to Dr. Romoff by program year, 2016 to 2025
General payments to Dr. Romoff by kind, 2016 to 2025
$4.1Kin total
- Food and beverage$4,00799%
- Education$511%
Companies that paid Dr. Romoff the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark S. Romoff has 1 award and honors on record
Dmand AI lists 1 award for Dr. Romoff, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Romoff
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Mark S. Romoff graduated from Medical College of Georgia
Dr. Romoff graduated from Medical College of Georgia in 1973.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Mark S. Romoff accepts plans from 14 insurance carriers
Dr. Romoff is in network with 14 carriers, including Elevance, United Healthcare and Aetna. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Elevance
- United Healthcare
- Aetna
- Blue Cross Blue Shield of Michigan
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +6 more carriersWith a free account
Plan types Dr. Romoff accepts, by number of carriers
- PPO9
- Medicare7
- HMO6
- EPO5
- POS5
Source: Dmand AI Insurance Network Data
Sources for Dr. Mark S. Romoff's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mark S. Romoff
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mark S. Romoff's NPI number?
Dr. Mark S. Romoff's NPI number is 1578543179. It was assigned on January 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark S. Romoff?
Dr. Mark S. Romoff is a nephrologist in Vannuys, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Mark S. Romoff practice?
Dr. Romoff practices at 15211 W Vanowen St, Vannuys, CA 91405. Dr. Romoff's primary practice is Cedars-Sinai Medical Care Foundation in Vannuys, California. Dmand AI also links Dr. Romoff to 1 group practice or clinic and 1 home health agency.
What is Dr. Mark S. Romoff's office phone number?
The practice phone on file for Dr. Romoff is (310) 385-3200.
What is Dr. Mark S. Romoff's medical license number?
Dr. Romoff holds California license G27803, one of the licenses on file in 2 states.
Which states has Dr. Mark S. Romoff been licensed in?
Dmand AI has state licenses on file for Dr. Romoff in California (1974 to 2026) and Georgia (1974 to 1981).
Which hospitals is Dr. Mark S. Romoff affiliated with?
Dr. Romoff is affiliated with Cedars-Sinai Medical Center.
What medical group is Dr. Mark S. Romoff part of?
Dr. Romoff is linked to Cedars-Sinai Medical Group.
Does Dr. Mark S. Romoff accept Medicare?
Yes. CMS data shows Dr. Romoff billed Medicare for 10,649 services in 2024, and Dr. Romoff accepts Medicare assignment.
Does Dr. Mark S. Romoff offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Romoff as offering telehealth services.
Show 10 more questionsShow fewer questions
What is Dr. Mark S. Romoff's MIPS score?
Dr. Romoff's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mark S. Romoff see?
CMS counts 707 Medicare patients who saw Dr. Romoff in 2024, with an average age of 77.
Is Dr. Mark S. Romoff board certified?
Yes. Dr. Romoff is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Mark S. Romoff bill to Medicare?
In 2024, Dr. Romoff's most billed Medicare services were injected or infused drug (J0897), office visit, established patient (99214) and surgery: heart and blood vessels (36415).
Where did Dr. Mark S. Romoff go to medical school?
Dr. Romoff graduated from Medical College of Georgia in 1973.
What drugs does Dr. Mark S. Romoff prescribe most?
In 2024 Medicare Part D data, Dr. Romoff's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
Has Dr. Mark S. Romoff received payments from drug or device companies?
CMS Open Payments shows $4,058 in general payments to Dr. Romoff from 30 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. Mark S. Romoff been practicing?
Dr. Romoff graduated from medical school in 1973, 53 years ago.
Does Dr. Mark S. Romoff do research?
Dmand AI links 1 publication to Dr. Romoff.
What insurance does Dr. Mark S. Romoff accept?
Dr. Romoff is in network with 14 carriers, including Elevance, United Healthcare and Aetna. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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