Timothy David Trojan, MD
Allergy & Immunology Physician · Enid, OK
Timothy David Trojan, MD is an allergy & immunology physician with a practice address in Enid, Oklahoma, and NPI 1518125053, issued on May 31, 2008. Check the license (Oklahoma 29671, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Timothy David Trojan
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- 29671 OK
Self-reported in NPPES; status is on the state search - Practice location
- 3201 N Van Buren St, Enid, OK 73703
- Phone
- (580) 366-0844
- Enumerated
- May 31, 2008
- Record last updated
- Oct 31, 2023
- Fax
- (580) 297-5197
- Medicaid ID
- 200572740B OK
- Medicare enrollment
- Enrolled (PECOS I20131223000287); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 2008
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 19 in Oklahoma → Look up another NPI →
Also registered at 3201 N Van Buren St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robi Chatterji, M.D.Family Medicine Physician1750322459
- Jerome Dilling, M.D.Otolaryngology Physician1336118801
- Angela Johnston, PA-CPhysician Assistant1215187885
- Michael O'Quin, MDPediatrics Physician1053401604
- Allison Payne, MDPediatrics Physician1194166876
- Cindy Roberts, MS CCC-AAudiologist1063693695
Verify Timothy David Trojan 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 29671Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average allergy & immunology physician in 2024
1,889 Medicare Part D claims for 373 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims.
Most prescribed
- Ipratropium Bromide195 claims
- Montelukast Sodium178 claims
- Azelastine Hcl153 claims
- Fluticasone Propionate146 claims
- Mometasone Furoate100 claims
- Symbicort98 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.
The MIPS final score for 2023 (Medicare payment program): 74.7 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,581.30
75 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 2,496 providers of this specialty with any payment received $8,321.81 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
- Allergy Partners PLLCEnid, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy David Trojan among 19 allergy & immunology physician records in Oklahoma
Timothy David Trojan, MD is one of 19 allergy & immunology physician records with a practice address in Oklahoma. 68% 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 79% of them.
- NPI issued2008 · 79% of these records are older, 16% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2008 · median 1998 among the 12 with a school on file
- Record last updated2023 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in Oklahoma
There are 19 allergy & immunology physician records in Oklahoma.
All 19 in Oklahoma → Every provider in Enid → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Aisha Mohammed, MDLawton, OK 735051942721543
- Mark Hamra, M.D.Broken Arrow, OK 740121164428215
- Bret Haymore, MDBroken Arrow, OK 740121376503102
- Terence Carey, M.D.Tulsa, OK 741361003998816
- Christopher Gifford, MDTulsa, OK 741361578562336
- Weyman LamTulsa, OK 741361225442130
- Michelle Montalbano, M.D.Tulsa, OK 741361437104544
- Lynn Wiens, MDTulsa, OK 741361861465916
Common questions
What is Timothy David Trojan, MD's NPI number?
Timothy David Trojan, MD's National Provider Identifier (NPI) is 1518125053, issued on May 31, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Timothy David Trojan, MD located?
The NPPES record lists a practice address at 3201 N Van Buren St, Enid, OK, 73703. Phone: (580) 366-0844. Providers update this record themselves, so call before visiting.
How can I verify Timothy David Trojan, MD's license?
NPPES lists Oklahoma license number 29671, 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 Timothy David Trojan, MD prescribe under Medicare Part D?
In 2024, Timothy David Trojan, MD had 1,889 Medicare Part D claims for 373 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
What is Timothy David Trojan, MD's MIPS final score?
The 2023 MIPS final score is 74.7 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.