Brian Gillam Birdwell, M.D.
Internal Medicine Physician · Lawton, OK
Brian Gillam Birdwell, M.D. is an internal medicine physician with a practice address in Lawton, Oklahoma, and NPI 1013909605, issued on Aug 18, 2005. Check the license (Oklahoma 13900, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Brian Gillam Birdwell
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 13900 OK
Self-reported in NPPES; status is on the state search - Practice location
- 4202 SW Lee Blvd, Lawton, OK 73505
- Phone
- (580) 248-9966
- Enumerated
- Aug 18, 2005
- Record last updated
- Dec 22, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (580) 248-8313
- Medicaid ID
- 100824240 OK
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,115 in Oklahoma → Look up another NPI →
Also registered at 4202 SW Lee Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ann Chorman, LCSWClinical Social Worker1659022044
- Kimberly ClarkProfessional Counselor1548741358
- Debra Crawford, DOHospice and Palliative Medicine (Obstetrics & Gynecology) Physician1114139334
- Caley Filipek, LPCProfessional Counselor1205682101
Verify Brian Gillam Birdwell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
Search for license 13900Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
11% more Medicare Part D claims than the average internal medicine physician in 2024
3,526 Medicare Part D claims for 154 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 267 claims were for opioids.
Most prescribed
- Levothyroxine Sodium123 claims
- Amlodipine Besylate112 claims
- Potassium Chloride110 claims
- Rosuvastatin Calcium109 claims
- Alprazolam107 claims
- Hydrocodone-Acetaminophen106 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.
Brian Gillam Birdwell among 1,115 internal medicine physician records in Oklahoma
Brian Gillam Birdwell, M.D. is one of 1,115 internal medicine physician records with a practice address in Oklahoma. 77% 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, 89% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2011 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in Oklahoma
There are 1,115 internal medicine physician records in Oklahoma.
All 1,115 in Oklahoma → Every provider in Lawton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Robert Balogh, MDLawton, OK 735051265460646
- Rosemary Bellino Hall, M.D.Lawton, OK 735051770577975
- Richard Brittingham, MDLawton, OK 735051568457331
- Maristela Cibes-Silva, M.D.Lawton, OK 735051760552277
- Laura Coleman, MDLawton, OK 735051528109691
- Daniel Constance, M.D.Lawton, OK 735051912110578
- Richard Hastings, D.O.Lawton, OK 735051225239155
- Robert Love, MDLawton, OK 735051255322111
Common questions
What is Brian Gillam Birdwell, M.D.'s NPI number?
Brian Gillam Birdwell, M.D.'s National Provider Identifier (NPI) is 1013909605, issued on Aug 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Brian Gillam Birdwell, M.D. located?
The NPPES record lists a practice address at 4202 SW Lee Blvd, Lawton, OK, 73505. Phone: (580) 248-9966. Providers update this record themselves, so call before visiting.
How can I verify Brian Gillam Birdwell, M.D.'s license?
NPPES lists Oklahoma license number 13900, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Brian Gillam Birdwell, M.D. prescribe under Medicare Part D?
In 2024, Brian Gillam Birdwell, M.D. had 3,526 Medicare Part D claims for 154 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.