Ayaz O. Khan, D.O.
Ophthalmology Physician · Pomona, CA
Ayaz O. Khan, D.O. is an ophthalmology physician with a practice address in Pomona, California, and NPI 1467617159, issued on Jul 23, 2008. Check the license (California 20A9417, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ayaz O. Khan
- Credential
- D.O.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 20A9417 CA
Self-reported in NPPES; status is on the state search - Practice location
- 648 N Park Ave, Pomona, CA 91768
- Phone
- (909) 927-8487
- Enumerated
- Jul 23, 2008
- Record last updated
- May 18, 2022
- Fax
- (844) 431-4730
- Medicare enrollment
- Enrolled (PECOS I20081114000640); accepts Medicare assignment
- Medical or professional school
- College Of Osteo Med Of The Pacific At Pomona, 2004
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 648 N Park Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Katherine Ha, ODOptometrist1942727243
- Cynthia RaymundoOptometrist1447755889
Verify Ayaz O. Khan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A9417Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average ophthalmology physician in 2024
1,116 Medicare Part D claims for 183 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 34% of claims.
Most prescribed
- Latanoprost421 claims
- Dorzolamide-Timolol161 claims
- Prednisolone Acetate157 claims
- Ketorolac Tromethamine118 claims
- Moxifloxacin107 claims
- Brimonidine Tartrate70 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: $81.51
2 payments; by number, the most common kind was food and beverage; the largest payer was Baxter Healthcare. The 13,221 providers of this specialty with any payment received $4,535.02 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.
Ayaz O. Khan among 2,899 ophthalmology physician records in California
Ayaz O. Khan, D.O. is one of 2,899 ophthalmology 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 2008, is newer than 67% of them.
- NPI issued2008 · 67% of these records are older, 28% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2004 · median 2001 among the 1,907 with a school on file
- Record last updated2022 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Pomona → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Dennis Chuck, MDPomona, CA 917681033183413
- Kristie Lin, M.D.Pomona, CA 917671184801557
- Roger Chan, M.D.Rosemead, CA 917701104965375
- Elson Lai, MDRosemead, CA 917701750549192
- Dai Tran, MDRosemead, CA 917701649367921
- Wayne Martin, M.D.Diamond Bar, CA 917651033293261
- Eric Areiter, MDOntario, CA 917641427496264
- Lizbeth Vicencio-Regner, MDMontclair, CA 917631962622126
Common questions
What is Ayaz O. Khan, D.O.'s NPI number?
Ayaz O. Khan, D.O.'s National Provider Identifier (NPI) is 1467617159, issued on Jul 23, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ayaz O. Khan, D.O. located?
The NPPES record lists a practice address at 648 N Park Ave, Pomona, CA, 91768. Phone: (909) 927-8487. Providers update this record themselves, so call before visiting.
How can I verify Ayaz O. Khan, D.O.'s license?
NPPES lists California license number 20A9417, 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 Ayaz O. Khan, D.O. prescribe under Medicare Part D?
In 2024, Ayaz O. Khan, D.O. had 1,116 Medicare Part D claims for 183 beneficiaries; the average among ophthalmology physician prescribers was 1,518. 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.