NPPES file of Aug 9, 2026

Umer Hayyat, MD

Internal Medicine Physician · San Diego, CA

Umer Hayyat, MD is an internal medicine physician with a practice address in San Diego, California, and NPI 1851812499, issued on Jul 5, 2017. Check the license (California A169544, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1851812499
Name
Umer Hayyat
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
A169544 CA
0101268447 VA
Self-reported in NPPES; status is on the state search
Practice location
7901 Frost St, San Diego, CA 92123
Phone
(858) 939-3400
Enumerated
Jul 5, 2017
Record last updated
Nov 11, 2024
Medicare enrollment
Enrolled (PECOS I20200924002906); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 7901 Frost St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Aileen Afshar, MDInternal Medicine Physician1134689946
  2. Saad Alkhider, MDInternal Medicine Physician1447712062
  3. Mustafa Alwash, M.DHospitalist Physician1679936439
  4. Alexandra Anjier, MDEmergency Medicine Physician1467087510
  5. Anna Astashchanka, MDPulmonary Disease Physician1821594359
  6. Amir Bahreman, M.D.Internal Medicine Physician1124249388

Verify Umer Hayyat in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A169544
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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91% fewer Medicare Part D claims than the average internal medicine physician in 2024

281 Medicare Part D claims for 113 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 24 claims were for opioids.

  1. Umer Hayyat281
  2. Specialty average3,176

Most prescribed

  1. Cefuroxime22 claims
  2. Pantoprazole Sodium17 claims
  3. Albuterol Sulfate Hfa14 claims
  4. Tramadol Hcl14 claims
  5. Doxycycline Hyclate13 claims
  6. Prednisone13 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): 72.5 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.

  1. Qualityout of 100 · 30% of the final score58.7
  2. Costout of 100 · 30%71.5
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activitiesnot scored

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $141.77

2 payments; by number, the most common kind was food and beverage; the largest payer was Zoll Services LLC (a/k/a Zoll LifeCor Corp). The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Umer Hayyat$141.77
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Emergency And Acute Care Medical CorporationSan Diego, CA
  2. Focus ON Health IncSan Diego, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Umer Hayyat among 17,696 internal medicine physician records in California

Umer Hayyat, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 81% of them.

  • NPI issued2017 · 81% of these records are older, 16% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2012 · median 2004 among the 11,065 with a school on file
  • Record last updated2024 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

961 internal medicine physician records list a practice address in San Diego

They are 961 of the 52,937 NPPES records with a practice address in San Diego, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Paulette Cazares, M.D., MPHSan Diego, CA 921231710927470
  2. Sarah Coskun, M.D.San Diego, CA 921231104878545
  3. Asim Guha Roy, MDSan Diego, CA 921231083659528
  4. Elan Hekier, M.D.San Diego, CA 921231225092463
  5. Faiz Hussain, MDSan Diego, CA 921231962422147
  6. Bernard Lichtenstein, M.D.San Diego, CA 921231104878073
  7. Karim Mansour, M.D.San Diego, CA 921231942238878
  8. Lynne Milgram, M.D.San Diego, CA 921231629016316

Common questions

What is Umer Hayyat, MD's NPI number?

Umer Hayyat, MD's National Provider Identifier (NPI) is 1851812499, issued on Jul 5, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Umer Hayyat, MD located?

The NPPES record lists a practice address at 7901 Frost St, San Diego, CA, 92123. Phone: (858) 939-3400. Providers update this record themselves, so call before visiting.

How can I verify Umer Hayyat, MD's license?

NPPES lists California license number A169544, 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 Umer Hayyat, MD prescribe under Medicare Part D?

In 2024, Umer Hayyat, MD had 281 Medicare Part D claims for 113 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

What is Umer Hayyat, MD's MIPS final score?

The 2023 MIPS final score is 72.5 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.