NPPES file of Aug 9, 2026

Ma'An Nasir, M.D.

Retina Specialist (Ophthalmology) Physician · Santa Barbara, CA

Ma'An Nasir, M.D. is a retina specialist (ophthalmology) physician with a practice address in Santa Barbara, California, and NPI 1629177241, issued on Sep 21, 2006. Check the license (California A50917, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1629177241
Name
Ma'An Nasir
Credential
M.D.
Primary taxonomy
Retina Specialist (Ophthalmology) Physician 207WX0107X
License number
A50917 CA
Self-reported in NPPES; status is on the state search
Practice location
525 E Micheltorena St Ste A, Santa Barbara, CA 93103
Phone
(805) 963-1648
Enumerated
Sep 21, 2006
Record last updated
Jun 6, 2022
Medicare enrollment
Enrolled (PECOS I20040512001647); accepts Medicare assignment
Medical or professional school
University Of Texas Medical School At San Antonio, 1990
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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8 nearest retina specialist (ophthalmology) physician records → All 205 in California → Look up another NPI →

Also registered at 525 E Micheltorena St Ste A

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

  1. Robert Avery, M.D.Retina Specialist (Ophthalmology) Physician1700985496
  2. Alessandro Castellarin, M.D.Retina Specialist (Ophthalmology) Physician1689773244
  3. Stephen Couvillion, MDRetina Specialist (Ophthalmology) Physician1316980014
  4. Dilsher Dhoot, M.D.Retina Specialist (Ophthalmology) Physician1508070566
  5. Daniel Learned, M.D.Retina Specialist (Ophthalmology) Physician1033406780
  6. Dante Pieramici, M.D.Retina Specialist (Ophthalmology) Physician1992804504

Verify Ma'An Nasir in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A50917    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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63% more Medicare Part D claims than the average retina specialist (ophthalmology) physician in 2024

1,009 Medicare Part D claims for 254 beneficiaries, against an average of 620 among the 1,449 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.

  1. Ma'An Nasir1,009
  2. Specialty average620

Most prescribed

  1. Ketorolac Tromethamine323 claims
  2. Erythromycin99 claims
  3. Prednisolone Acetate94 claims
  4. Moxifloxacin86 claims
  5. Timolol Maleate68 claims
  6. Brimonidine Tartrate47 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.

Industry payments in 2024: $72.14

3 payments; by number, the most common kind was food and beverage; the largest payer was Genentech USA, Inc. The 1,253 providers of this specialty with any payment received $7,667.49 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Ma'An Nasir$72.14
  2. Specialty average$7,667.49

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

  1. California Retina ConsultantsSanta Barbara, CA

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

Ma'An Nasir among 205 retina specialist (ophthalmology) physician records in California

Ma'An Nasir, M.D. is one of 205 retina specialist (ophthalmology) physician records with a practice address in California. 98% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 65% newer
  • In a Medicare fileYes · 98% of these records are
  • In the CMS Doctors and Clinicians fileYes · 92% of these records are
  • Graduated1990 · median 2007 among the 189 with a school on file
  • Record last updated2022 · 37% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0107X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Retina Specialist (Ophthalmology) Physician providers in California

There are 205 retina specialist (ophthalmology) physician records in California.

All 205 in California → Every provider in Santa Barbara → Retina Specialist (Ophthalmology) Physician nationwide →

The 8 retina specialist (ophthalmology) physician records with the nearest ZIP codes

  1. Robert Avery, M.D.Santa Barbara, CA 931031700985496
  2. Alessandro Castellarin, M.D.Santa Barbara, CA 931031689773244
  3. Stephen Couvillion, MDSanta Barbara, CA 931031316980014
  4. Dilsher Dhoot, M.D.Santa Barbara, CA 931031508070566
  5. Daniel Learned, M.D.Santa Barbara, CA 931031033406780
  6. Dante Pieramici, M.D.Santa Barbara, CA 931031992804504
  7. Nathan Steinle, M.D.Santa Barbara, CA 931031942455423
  8. Nika Bagheri, M.D.Simi Valley, CA 930651790040087

Common questions

What is Ma'An Nasir, M.D.'s NPI number?

Ma'An Nasir, M.D.'s National Provider Identifier (NPI) is 1629177241, issued on Sep 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ma'An Nasir, M.D. located?

The NPPES record lists a practice address at 525 E Micheltorena St Ste A, Santa Barbara, CA, 93103. Phone: (805) 963-1648. Providers update this record themselves, so call before visiting.

How can I verify Ma'An Nasir, M.D.'s license?

NPPES lists California license number A50917, 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 Ma'An Nasir, M.D. prescribe under Medicare Part D?

In 2024, Ma'An Nasir, M.D. had 1,009 Medicare Part D claims for 254 beneficiaries; the average among retina specialist (ophthalmology) physician prescribers was 620. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.