Thomas S. Nasser, DO
Physical Medicine & Rehabilitation Physician · Lancaster, CA
Thomas S. Nasser, DO is a physical medicine & rehabilitation physician with a practice address in Lancaster, California, and NPI 1073594636, issued on Nov 10, 2005. Check the license (California 20A8971, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas S. Nasser
- Credential
- DO
- Primary taxonomy
- Physical Medicine & Rehabilitation Physician 208100000X
- License number
- 20A8971 CA
Self-reported in NPPES; status is on the state search - Practice location
- 43847 Heaton Ave, Lancaster, CA 93534
- Phone
- (661) 729-3388
- Enumerated
- Nov 10, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (661) 726-5377
- Medicare enrollment
- Enrolled (PECOS I20050322001182); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physical medicine & rehabilitation physician records → All 1,549 in California → Look up another NPI →
Also registered at 43847 Heaton Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thomas S. Nasser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A8971Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12.5 times the Medicare Part D claims of the average physical medicine & rehabilitation physician in 2024
9,068 Medicare Part D claims for 823 beneficiaries, against an average of 727 among the 7,448 providers of this specialty who prescribed in Part D. 3,847 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen1,211 claims
- Gabapentin1,124 claims
- Oxycodone-Acetaminophen941 claims
- Oxycodone Hcl650 claims
- Pregabalin398 claims
- Tizanidine Hcl358 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: $1,361.58
39 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 3,895 providers of this specialty with any payment received $1,237.86 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
- Avors Medical GroupLancaster, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas S. Nasser among 1,549 physical medicine & rehabilitation physician records in California
Thomas S. Nasser, DO is one of 1,549 physical medicine & rehabilitation physician records with a practice address in California. 59% 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, 97% newer
- In a Medicare fileYes · 59% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated2001 · median 2008 among the 786 with a school on file
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208100000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physical Medicine & Rehabilitation Physician providers in California
There are 1,549 physical medicine & rehabilitation physician records in California.
All 1,549 in California → Every provider in Lancaster → Physical Medicine & Rehabilitation Physician nationwide →
The 8 physical medicine & rehabilitation physician records with the nearest ZIP codes
- Scott Daniel, DOLancaster, CA 935341861021222
- Orlando Pena, D.O.Lancaster, CA 935341689068629
- Kalpana Ravikumar, MDLancaster, CA 935341821008111
- Jaime ShullickLancaster, CA 935341720537822
- Faiz Tausif, M.D.Lancaster, CA 935341770014805
- Domingo Palencia Bicaldo, M.D.Edwards Afb, CA 935241316921497
- Victoria Orlowski, DPTBishop, CA 935141801386651
- Valerie Assemi, RPTTempleton, CA 934651881752533
Common questions
What is Thomas S. Nasser, DO's NPI number?
Thomas S. Nasser, DO's National Provider Identifier (NPI) is 1073594636, issued on Nov 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thomas S. Nasser, DO located?
The NPPES record lists a practice address at 43847 Heaton Ave, Lancaster, CA, 93534. Phone: (661) 729-3388. Providers update this record themselves, so call before visiting.
How can I verify Thomas S. Nasser, DO's license?
NPPES lists California license number 20A8971, 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 Thomas S. Nasser, DO prescribe under Medicare Part D?
In 2024, Thomas S. Nasser, DO had 9,068 Medicare Part D claims for 823 beneficiaries; the average among physical medicine & rehabilitation physician prescribers was 727. 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.