David Allen Markman, M.D.
Ophthalmology Physician · Lawndale, CA
David Allen Markman, M.D. is an ophthalmology physician with a practice address in Lawndale, California, and NPI 1508961640, issued on Sep 13, 2006. Check the license (California C28030, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Allen Markman
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- C28030 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4223 Redondo Beach Blvd, Lawndale, CA 90260
- Phone
- (310) 370-5648
- Enumerated
- Sep 13, 2006
- Record last updated
- Feb 5, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (310) 370-0449
- Medicare enrollment
- Enrolled (PECOS I20120213000769); accepts Medicare assignment
- Medical or professional school
- Washington University School Of Medicine, 1963
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Verify David Allen Markman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C28030Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% more Medicare Part D claims than the average ophthalmology physician in 2024
1,553 Medicare Part D claims for 429 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 43% of claims.
Most prescribed
- Latanoprost708 claims
- Dorzolamide-Timolol207 claims
- Timolol Maleate168 claims
- Brimonidine Tartrate119 claims
- Prednisolone Acetate45 claims
- Dorzolamide Hcl35 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: $15.07
1 payment: food and beverage; the largest payer was Amgen Inc. 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.
Bills Medicare through one group practice
- Markman And Wolstan A Medical GroupTorrance, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Allen Markman among 2,899 ophthalmology physician records in California
David Allen Markman, M.D. 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 45% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1963 · median 2001 among the 1,907 with a school on file
- Record last updated2013 · 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 Lawndale → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Matthew Hecht, M DLawndale, CA 902601184783508
- Theodore OkieLynwood, CA 902621629184098
- Joseph Peters, M.D.Lynwood, CA 902621568577567
- Hanna Shammas, M.D.Lynwood, CA 902621770698854
- Maya Shammas, M.D.Lynwood, CA 902621649438763
- Thanh-Thao Vu, MDLynwood, CA 902621912565144
- Carlos Montoya, MDHuntington Park, CA 902551063420974
- Carlos Montoya, M.D.Huntington Park, CA 902551386616019
Common questions
What is David Allen Markman, M.D.'s NPI number?
David Allen Markman, M.D.'s National Provider Identifier (NPI) is 1508961640, issued on Sep 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Allen Markman, M.D. located?
The NPPES record lists a practice address at 4223 Redondo Beach Blvd, Lawndale, CA, 90260. Phone: (310) 370-5648. Providers update this record themselves, so call before visiting.
How can I verify David Allen Markman, M.D.'s license?
NPPES lists California license number C28030, 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 David Allen Markman, M.D. prescribe under Medicare Part D?
In 2024, David Allen Markman, M.D. had 1,553 Medicare Part D claims for 429 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.