Dr. Gregory B. Tirdel, MD

  • Truckee, CA
  • Internist
NPI1821080144PAC ID9234237413
Medicare services, 2024
168
Medicare patients, 2024
145
Part D claims, 2024
1,786
Publications
2
MIPS score, 2024
96
Practice address
10121 Pine Ave, Truckee, CA 96161
Practice phone
Call (530) 587-6011
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Tahoe Forest Hospital

Hospital · Truckee, California

See all 11 affiliations

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Dr. Gregory B. Tirdel is an internist in Truckee, California

Dr. Tirdel practices at Tahoe Forest Hospital in Truckee, California, part of Tahoe Forest Hospital District.

Dr. Tirdel's NPI, 1821080144, was assigned on August 22, 2005. Dr. Tirdel graduated from Drexel University College Of Medicine in 1989. Dr. Tirdel's California license number on file is G69661.

NPI and contact details
Medicare PAC ID
9234237413
NPI enumeration date
August 22, 2005
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(530) 587-6011
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
63
Medical school graduation
1989

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Gregory B. Tirdel practices at Tahoe Forest Hospital in Truckee, California

Dr. Tirdel's primary practice is Tahoe Forest Hospital, at 10121 Pine Ave, Truckee, CA 96161 in Nevada County. The practice phone is (530) 587-6011.

Source: Dmand AI Affiliation Data

Dr. Gregory B. Tirdel is affiliated with 6 sites of care and 5 medical groups

Dr. Tirdel's primary practice is Tahoe Forest Hospital in Truckee, California, part of Tahoe Forest Hospital District. Dr. Tirdel is also affiliated with Barton Memorial Hospital. The medical group on file is Tahoe Forest MultiSpecialty Clinics. Dmand AI also links Dr. Tirdel to 3 more hospitals, 4 medical groups and 1 rural health clinic, each named with a free account.

See all 11 affiliations for Dr. Tirdel

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Gregory B. Tirdel's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tirdel practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Tahoe Forest HospitalAvailable with a free account
+5 more sites and 4 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dmand AI maps EHR vendors, IT decision makers and buying committees across Tahoe Forest Hospital District and 6.2K+ hospitals, with verified contacts in the same login.

Dr. Gregory B. Tirdel is one of 16,751 internists in California

Internal medicine is Dr. Tirdel's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Tirdel is board certified in critical care medicine by the American Board of Internal Medicine. Dmand AI has Dr. Tirdel's licenses on file in 2 states: California and Nevada.

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense G696610 · 1990 to 2025 · taxonomy 207R00000X
  • Nevada license1998 to 2027

Internists near Dr. Tirdel

Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Gregory B. Tirdel billed Medicare for 168 services in 2024

CMS data shows 168 Medicare services from Dr. Tirdel across 3 procedure codes in 2024, for 145 Medicare patients. Medicare paid $12,752 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024168
Medicare patients145
Paid by Medicare$12,752
Procedure codes3

Dr. Tirdel's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Tests and treatments
2023: 762024: 12261%
Other services
2023: 362024: 4628%

Dr. Tirdel compared with the California median for internists, 2024

  • Dr. Tirdel
  • California median
Medicare services
168vs 36153% below
Medicare patients
145vs 151Close to median
Part D claims
1,550vs 4213.7 times

Medians across 15,815 internists in California with Dmand AI profiles that report each measure.

Dr. Tirdel's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Tirdel

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Gregory B. Tirdel treated 145 Medicare patients in 2024, average age 72

CMS counts 145 Medicare patients who saw Dr. Tirdel in 2024. The largest group is 65 to 74, with 96 patients. 75% of them have high cholesterol, and 66% have high blood pressure. 12% are also on Medicaid. Their average risk score is 1.02, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Tirdel's median patient age at 70, with 43% women.

Medicare patients, 2024145
Average age72
Average risk score1.02
Also on Medicaid12%

Dr. Tirdel's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Tirdel's Medicare patients by sex, 2024

  • Women5941%
  • Men8659%

Chronic conditions among Dr. Tirdel's Medicare patients, 2024

  1. High cholesterol75%
  2. High blood pressure66%
  3. Arthritis55%
  4. Anxiety29%
  5. Mood disorders24%
  6. Osteoporosis23%
  7. Atrial fibrillation22%
  8. Depression22%

Share of Medicare patients with each condition. A patient can have several.

Dr. Tirdel's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 70

Patient panel by sex, all payers

  • Women43%
  • Men56%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Gregory B. Tirdel wrote 1,786 Medicare Part D claims in 2024

In 2024, Dr. Tirdel wrote 1,786 Medicare Part D claims for 291 patients. 50% of them were for generic drugs. CMS names the drug for 1,550 of them, across 39 drugs with 11 or more claims each, at $548,810 in total drug cost. In 2023, CMS named 1,433 claims across 43 drugs.

Part D claims, 20241,786
Drugs named by CMS39
Total drug cost$548,810
Part D patients291

Dr. Tirdel's Part D claims by kind of drug, 2024

  • Generic895 claims50%
  • Brand-name891 claims50%

Dr. Tirdel's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Tirdel's Part D claims, 2024

  • Antibiotics2%42 of 1,786 claims
  • Antipsychotics, patients 65 and over1%17 of 1,786 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1,4332024: 1,5508%

Drugs named by CMS: 39 in 2024, 43 in 2023.

See all prescribing by Dr. Tirdel

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Gregory B. Tirdel scored 96 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 96 out of 100 for Dr. Tirdel for performance year 2024, reported through an alternative payment model (APM). Dr. Tirdel accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Tirdel's MIPS scores, performance year 2024

  • 96of 100Final score
  • 89.9of 100Quality
  • 94of 100Promoting Interoperability
  • 40of 100Improvement Activities

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Dr. Gregory B. Tirdel has 2 publications on record

Dmand AI links 2 papers to Dr. Tirdel. Dr. Tirdel's most frequent co-author is Robert Stephen Fishman, MD.

Papers2

Dr. Tirdel's most frequent co-authors

Recent publications by Dr. Tirdel

See all 2 publications and co-authors

See who Dr. Tirdel researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tirdel works with, so you can find a warm path to the right internists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Gregory B. Tirdel received $913 in industry payments from 2016 to 2024

CMS Open Payments shows 20 general payments to Dr. Tirdel from 10 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 98% of the total. GlaxoSmithKline, LLC. paid the most, $298.

General payments to Dr. Tirdel by program year, 2016 to 2024

General payments to Dr. Tirdel by kind, 2016 to 2024

$913in total
  • Food and beverage$89698%
  • Education$172%

Companies that paid Dr. Tirdel the most, 2016 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Tirdel

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Gregory B. Tirdel has 1 award and honors on record

Dmand AI lists 1 award for Dr. Tirdel, most recently CMS Stage 1 EHR in 2013.

Awards and honors for Dr. Tirdel

  1. 2013
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Dr. Gregory B. Tirdel graduated from Drexel University College Of Medicine

Dr. Tirdel graduated from Drexel University College Of Medicine in 1989.

  1. Medical schoolDrexel University College Of Medicine
  2. Board certified in critical care medicineAmerican Board of Internal Medicine
  3. Board certified in pulmonary diseaseAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Gregory B. Tirdel accepts plans from 13 insurance carriers

Dr. Tirdel is in network with 13 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • HCSC
  • Blue Cross Blue Shield of Massachusetts
  • Humana
  • Regence Health Plans
  • +5 more carriersWith a free account

Plan types Dr. Tirdel accepts, by number of carriers

  1. Medicare9
  2. PPO9
  3. HMO5
  4. POS5
  5. EPO3
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Gregory B. Tirdel's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Gregory B. Tirdel

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Gregory B. Tirdel's NPI number?

Dr. Gregory B. Tirdel's NPI number is 1821080144. It was assigned on August 22, 2005, and it is active in the NPI Registry.

What kind of doctor is Dr. Gregory B. Tirdel?

Dr. Gregory B. Tirdel is an internist in Truckee, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Gregory B. Tirdel practice?

Dr. Tirdel practices at 10121 Pine Ave, Truckee, CA 96161. Dr. Tirdel's primary practice is Tahoe Forest Hospital in Truckee, California, part of Tahoe Forest Hospital District. Dmand AI also links Dr. Tirdel to 3 hospitals, 4 medical groups and 1 rural health clinic.

What is Dr. Gregory B. Tirdel's office phone number?

The practice phone on file for Dr. Tirdel is (530) 587-6011.

What is Dr. Gregory B. Tirdel's medical license number?

Dr. Tirdel's California license number on file is G69661, one of the licenses on file in 2 states.

Which states has Dr. Gregory B. Tirdel been licensed in?

Dmand AI has state licenses on file for Dr. Tirdel in California (1990 to 2025) and Nevada (1998 to 2027).

Which hospitals is Dr. Gregory B. Tirdel affiliated with?

Dr. Tirdel practices at Tahoe Forest Hospital in Truckee, California. Dr. Tirdel is also affiliated with Barton Memorial Hospital. Dmand AI links Dr. Tirdel to 3 more hospitals.

What medical group is Dr. Gregory B. Tirdel part of?

Dr. Tirdel is linked to Tahoe Forest MultiSpecialty Clinics. Dmand AI links Dr. Tirdel to 4 more medical groups.

Does Dr. Gregory B. Tirdel accept Medicare?

Yes. CMS data shows Dr. Tirdel billed Medicare for 168 services in 2024, and Dr. Tirdel accepts Medicare assignment.

What is Dr. Gregory B. Tirdel's MIPS score?

Dr. Tirdel's MIPS final score for performance year 2024 is 96 out of 100, reported through an alternative payment model (APM).

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Gregory B. Tirdel see?

CMS counts 145 Medicare patients who saw Dr. Tirdel in 2024, with an average age of 72.

Is Dr. Gregory B. Tirdel board certified?

Yes. Dr. Tirdel is board certified in critical care medicine by the American Board of Internal Medicine.

What services does Dr. Gregory B. Tirdel bill to Medicare?

In 2024, Dr. Tirdel's most billed Medicare services were nerve and brain test (95811), medicare service (G0399) and nerve and brain test (95810).

Where did Dr. Gregory B. Tirdel go to medical school?

Dr. Tirdel graduated from Drexel University College Of Medicine in 1989.

What drugs does Dr. Gregory B. Tirdel prescribe most?

In 2024 Medicare Part D data, Dr. Tirdel's most prescribed drugs by claims were Anoro Ellipta, Albuterol Sulfate Hfa and Breo Ellipta.

Has Dr. Gregory B. Tirdel received payments from drug or device companies?

CMS Open Payments shows $913 in general payments to Dr. Tirdel from 10 companies from 2016 to 2024. The largest total came from GlaxoSmithKline, LLC.

How long has Dr. Gregory B. Tirdel been practicing?

Dr. Tirdel graduated from medical school in 1989, 37 years ago.

Does Dr. Gregory B. Tirdel do research?

Dmand AI links 2 publications to Dr. Tirdel.

Who does Dr. Gregory B. Tirdel publish with?

Dr. Tirdel's most frequent co-authors are Robert Stephen Fishman, MD (1 shared paper).

What insurance does Dr. Gregory B. Tirdel accept?

Dr. Tirdel is in network with 13 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

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