Ghasak Amer Mahmood, M.D.
Endocrinology, Diabetes & Metabolism Physician · Laguna Hills, CA
Ghasak Amer Mahmood, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Laguna Hills, California, and NPI 1215116116, issued on Oct 26, 2007. Check the license (California A88600, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ghasak Amer Mahmood
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- A88600 CA
Self-reported in NPPES; status is on the state search - Practice location
- 24012 Calle DE LA Plata, Laguna Hills, CA 92653
- Phone
- (949) 770-4177
- Enumerated
- Oct 26, 2007
- Record last updated
- Dec 4, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Also registered at 24012 Calle DE LA Plata
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Victor Carlos, DPTPhysical Therapist1952362964
- Tiffany Cervenak, NPNurse Practitioner1104803543
- Sandeep Chaudhary, M.DSpecialist1417055872
- Erika Cruz, NPNurse Practitioner1477946747
- Linda Daily, M.A.Audiologist-Hearing Aid Fitter1083803597
- Jenny Khiterer, N.P.Family Nurse Practitioner1134247174
Verify Ghasak Amer Mahmood in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A88600Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
229 Medicare Part D claims for 119 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 40% of claims.
Most prescribed
- Levothyroxine Sodium22 claims
- Nano 2nd Gen Pen Needle19 claims
- Metformin Hcl17 claims
- Lantus Solostar15 claims
- Humalog Kwikpen U-10011 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): 76.3 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).
Ghasak Amer Mahmood among 1,131 endocrinology, diabetes & metabolism physician records in California
Ghasak Amer Mahmood, M.D. is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 42% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2007 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in Laguna Hills → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Kimvir Dhillon, MDLaguna Hills, CA 926531083673248
- Priyanka Krishnan, M.D.Laguna Hills, CA 926531497940712
- Alan Marcus, M.DLaguna Hills, CA 926531275631657
- Lisa Markman, MDLaguna Hills, CA 926531780888610
- Gabrielle O'Connor, M.D.Laguna Beach, CA 926511720118961
- Eric Stevens, MDHuntington Beach, CA 926491215314430
- Scott Ahl, D.O.Huntington Beach, CA 926481558674523
- Robert NicoloffHuntington Beach, CA 926481982770350
Common questions
What is Ghasak Amer Mahmood, M.D.'s NPI number?
Ghasak Amer Mahmood, M.D.'s National Provider Identifier (NPI) is 1215116116, issued on Oct 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ghasak Amer Mahmood, M.D. located?
The NPPES record lists a practice address at 24012 Calle DE LA Plata, Laguna Hills, CA, 92653. Phone: (949) 770-4177. Providers update this record themselves, so call before visiting.
How can I verify Ghasak Amer Mahmood, M.D.'s license?
NPPES lists California license number A88600, 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 Ghasak Amer Mahmood, M.D. prescribe under Medicare Part D?
In 2024, Ghasak Amer Mahmood, M.D. had 229 Medicare Part D claims for 119 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Ghasak Amer Mahmood, M.D.'s MIPS final score?
The 2023 MIPS final score is 76.3 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.