Mark Asef, M.D.
Nephrology Physician · Highland, CA
Mark Asef, M.D. is a nephrology physician with a practice address in Highland, California, and NPI 1225561673, issued on Apr 4, 2017. Check the license (California A165100, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Asef
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A165100 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7223 Church St Ste A20, Highland, CA 92346
- Phone
- (909) 882-0702
- Enumerated
- Apr 4, 2017
- Record last updated
- Aug 9, 2022
- Fax
- (909) 886-6704
- Medicare enrollment
- Enrolled (PECOS I20200227000720); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 7223 Church St Ste A20
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hatem Ali, M.D.Nephrology Physician1821259466
- Oliver Le, MDNephrology Physician1457746026
Verify Mark Asef in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A165100Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average nephrology physician in 2024
1,025 Medicare Part D claims for 171 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.
Most prescribed
- Lokelma105 claims
- Furosemide81 claims
- Losartan Potassium65 claims
- Carvedilol59 claims
- Nifedipine Er55 claims
- Lisinopril46 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): 57.6 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: $712.45
31 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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
- Nephrology Associates Medical Group IncSan Bernardino, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Asef among 1,468 nephrology physician records in California
Mark Asef, 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 2017, is newer than 91% of them.
- NPI issued2017 · 91% of these records are older, 7% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2017 · median 2001 among the 1,128 with a school on file
- Record last updated2022 · 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).
8 nephrology physician records list a practice address in Highland
They are 8 of the 399 NPPES records with a practice address in Highland, and 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Highland → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Hatem Ali, M.D.Highland, CA 923461821259466
- Klemens Huynh, M.D.Highland, CA 923461184652935
- Hiep Le, M.D.Highland, CA 923461457393308
- Oliver Le, MDHighland, CA 923461457746026
- Hai Phan, MDHighland, CA 923461104817840
- Edward Serros, MDHighland, CA 923461386665024
- Hoa Vu, MDHighland, CA 923461528041092
- Sunil Jain, MBBS, MDLoma Linda, CA 923501477750602
Common questions
What is Mark Asef, M.D.'s NPI number?
Mark Asef, M.D.'s National Provider Identifier (NPI) is 1225561673, issued on Apr 4, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Mark Asef, M.D. located?
The NPPES record lists a practice address at 7223 Church St Ste A20, Highland, CA, 92346. Phone: (909) 882-0702. Providers update this record themselves, so call before visiting.
How can I verify Mark Asef, M.D.'s license?
NPPES lists California license number A165100, 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 Asef, M.D. prescribe under Medicare Part D?
In 2024, Mark Asef, M.D. had 1,025 Medicare Part D claims for 171 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is Mark Asef, M.D.'s MIPS final score?
The 2023 MIPS final score is 57.6 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.