Humayun Abbas, MD
Internal Medicine Physician · Modesto, CA
Humayun Abbas, MD is an internal medicine physician with a practice address in Modesto, California, and NPI 1336136548, issued on Oct 3, 2005. Check the license (California A68455, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Humayun Abbas
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A68455 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1541 Florida Ave, Modesto, CA 95350
- Phone
- (209) 577-3388
- Enumerated
- Oct 3, 2005
- Record last updated
- Mar 29, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (209) 523-0764
- Medicare enrollment
- Enrolled (PECOS I20080618000416); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1541 Florida Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Humayun Abbas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A68455Check 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 internal medicine physician in 2024
16,244 Medicare Part D claims for 963 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 916 claims were for opioids.
Most prescribed
- Atorvastatin Calcium794 claims
- Hydrocodone-Acetaminophen722 claims
- Amlodipine Besylate567 claims
- Omeprazole436 claims
- Gabapentin424 claims
- Lisinopril422 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.
Bills Medicare through one group practice
- Shane Speirs MD PCModesto, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Humayun Abbas among 17,696 internal medicine physician records in California
Humayun Abbas, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1984 · median 2004 among the 11,065 with a school on file
- Record last updated2011 · 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).
129 internal medicine physician records list a practice address in Modesto
They are 129 of the 9,262 NPPES records with a practice address in Modesto, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Modesto → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- James Boozer, MDModesto, CA 953501427046986
- Kit Duong, MDModesto, CA 953501114984051
- Barbara Kennedy-Funtila, MDModesto, CA 953501700874260
- Elliott Metcalfe, MDModesto, CA 953501295703692
- Tushar Modi, M.D.Modesto, CA 953501679551352
- Priti Modi, M.D., F.A.C.P.Modesto, CA 953501568440246
- Anita Prabhu, M.DModesto, CA 953501851312060
- Suhail Rahhal, MDModesto, CA 953501326044876
Common questions
What is Humayun Abbas, MD's NPI number?
Humayun Abbas, MD's National Provider Identifier (NPI) is 1336136548, issued on Oct 3, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Humayun Abbas, MD located?
The NPPES record lists a practice address at 1541 Florida Ave, Modesto, CA, 95350. Phone: (209) 577-3388. Providers update this record themselves, so call before visiting.
How can I verify Humayun Abbas, MD's license?
NPPES lists California license number A68455, 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 Humayun Abbas, MD prescribe under Medicare Part D?
In 2024, Humayun Abbas, MD had 16,244 Medicare Part D claims for 963 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.