Gregory B. Tirdel, MD
Internal Medicine Physician · Truckee, CA
Gregory B. Tirdel, MD is an internal medicine physician with a practice address in Truckee, California, and NPI 1821080144, issued on Aug 22, 2005. Check the license (California G69661, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory B. Tirdel
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- G69661 CA
G696610 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10956 Donner Pass RD, Truckee, CA 96161
- Phone
- (530) 582-6400
- Enumerated
- Aug 22, 2005
- Record last updated
- Feb 17, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (530) 582-6991
- Medicaid ID
- 1827433 CA
- Medicare enrollment
- Enrolled (PECOS I20250528002690); accepts Medicare assignment
- Medical or professional school
- Hahnemann University College Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 10956 Donner Pass RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gregory B. Tirdel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G69661Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,786 Medicare Part D claims for 291 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 50% of claims.
Most prescribed
- Anoro Ellipta240 claims
- Albuterol Sulfate Hfa168 claims
- Breo Ellipta150 claims
- Fluticasone-Salmeterol78 claims
- Trelegy Ellipta78 claims
- Montelukast Sodium76 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): 93.7 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: $216.96
2 payments; by number, the most common kind was food and beverage; the largest payer was United Therapeutics Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 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 3 group practices
- Barton Healthcare SystemSouth Lake Tahoe, CA
- Barton Medical FoundationSouth Lake Tahoe, CA
- Tahoe Forest Hospital DistrictTruckee, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory B. Tirdel among 17,696 internal medicine physician records in California
Gregory B. Tirdel, MD is one of 17,696 internal medicine 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1989 · median 2004 among the 11,065 with a school on file
- Record last updated2012 · 61% 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 California 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 California
There are 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Truckee → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Lisanne Burkholder, MD FACP FRACPTruckee, CA 961611124338116
- Richard GanongTruckee, CA 961611932255403
- Connor LemosTruckee, CA 961611699477067
- Joseph Lombard, MDTruckee, CA 961611821000811
- Naveen Maramreddy, M.D.Truckee, CA 961611134411267
- Gary Cooper, MDSouth Lake Tahoe, CA 961501487653663
- John Lewison, MDSouth Lake Tahoe, CA 961501497795678
- Oliver Medzihradsky, MDSouth Lake Tahoe, CA 961501972579373
Common questions
What is Gregory B. Tirdel, MD's NPI number?
Gregory B. Tirdel, MD's National Provider Identifier (NPI) is 1821080144, issued on Aug 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gregory B. Tirdel, MD located?
The NPPES record lists a practice address at 10956 Donner Pass RD, Truckee, CA, 96161. Phone: (530) 582-6400. Providers update this record themselves, so call before visiting.
How can I verify Gregory B. Tirdel, MD's license?
NPPES lists California license number G69661, 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 Gregory B. Tirdel, MD prescribe under Medicare Part D?
In 2024, Gregory B. Tirdel, MD had 1,786 Medicare Part D claims for 291 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Gregory B. Tirdel, MD's MIPS final score?
The 2023 MIPS final score is 93.7 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.