Oscar L. Castro, MD
Endocrinology, Diabetes & Metabolism Physician · Mobile, AL
Oscar L. Castro, MD is an endocrinology, diabetes & metabolism physician with a practice address in Mobile, Alabama, and NPI 1093743288, issued on Jun 28, 2006. Check the license (Alabama MD.32494, as entered in NPPES) on the Alabama Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Oscar L. Castro
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- MD.32494 AL
218694 AZ
ME90956 FL
010492979A IN
Self-reported in NPPES; status is on the state search - Practice location
- 6701 Airport Blvd, Mobile, AL 36608
- Phone
- (251) 633-8880
- Enumerated
- Jun 28, 2006
- Record last updated
- Aug 7, 2026
- Fax
- (251) 634-4503
- Medicare enrollment
- Enrolled (PECOS I20251014003154); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 92 in Alabama → Look up another NPI →
Also registered at 6701 Airport Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Oscar L. Castro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersAlabama Board of Medical Examiners
Search for license MD.32494Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
1,991 Medicare Part D claims for 235 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 62% of claims.
Most prescribed
- Ozempic256 claims
- Levothyroxine Sodium169 claims
- Lantus Solostar127 claims
- Farxiga115 claims
- Mounjaro102 claims
- Pioglitazone Hcl73 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: $352.28
17 payments; by number, the most common kind was food and beverage; the largest payer was Xeris Pharmaceuticals, Inc. The 5,661 providers of this specialty with any payment received $5,742.15 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 2 group practices
- Hpw Center For Diabetes LLCTerre Haute, IN
- Ozarks Medical CenterWest Plains, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Oscar L. Castro among 92 endocrinology, diabetes & metabolism physician records in Alabama
Oscar L. Castro, MD is one of 92 endocrinology, diabetes & metabolism physician records with a practice address in Alabama. 90% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 51% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1991 · median 2001 among the 68 with a school on file
- Record last updated2026 · 52% 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 Alabama 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 Alabama
There are 92 endocrinology, diabetes & metabolism physician records in Alabama.
All 92 in Alabama → Every provider in Mobile → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Ross Del Fierro, M.D.Mobile, AL 366081760406276
- Michael Galitz, M.D.Mobile, AL 366081275503690
- Charles Runels, M.D.Mobile, AL 366091982897625
- Jessica Bhathal, M.D.Mobile, AL 366041952696247
- Stephen Davis, M.D.Mobile, AL 366041285675710
- Michael Davis, M.D.Mobile, AL 366041669429171
- Jocelyn Hewitt, M.D.Mobile, AL 366041407047129
- Anita Kemmerly, M.D.Mobile, AL 366041972557338
Common questions
What is Oscar L. Castro, MD's NPI number?
Oscar L. Castro, MD's National Provider Identifier (NPI) is 1093743288, issued on Jun 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Oscar L. Castro, MD located?
The NPPES record lists a practice address at 6701 Airport Blvd, Mobile, AL, 36608. Phone: (251) 633-8880. Providers update this record themselves, so call before visiting.
How can I verify Oscar L. Castro, MD's license?
NPPES lists Alabama license number MD.32494, as entered by the provider. Search the Alabama Board of Medical Examiners at https://www.albme.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Oscar L. Castro, MD prescribe under Medicare Part D?
In 2024, Oscar L. Castro, MD had 1,991 Medicare Part D claims for 235 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.