Gregory Hollar, D.O.
Family Medicine Physician · Centennial, CO
Gregory Hollar, D.O. is a family medicine physician with a practice address in Centennial, Colorado, and NPI 1063462653, issued on May 12, 2006. Check the license (Colorado 25423, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregory Hollar
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 25423 CO
Self-reported in NPPES; status is on the state search - Practice location
- 7030 S Yosemite St, Centennial, CO 80112
- Phone
- (303) 721-9984
- Enumerated
- May 12, 2006
- Entity
- Type 1 · individual
Also registered at 7030 S Yosemite St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gregory Hollar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 25423Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
89% more Medicare Part D claims than the average family medicine physician in 2024
6,638 Medicare Part D claims for 443 beneficiaries, against an average of 3,519 among the 111,126 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 114 claims were for opioids.
Most prescribed
- Atorvastatin Calcium557 claims
- Levothyroxine Sodium379 claims
- Ezetimibe344 claims
- Rosuvastatin Calcium230 claims
- Amlodipine Besylate222 claims
- Losartan Potassium221 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 Medicare quality score for 2023: 87.5 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: $64.16
3 payments, mostly food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 53,013 providers of this specialty with any payment received $861.30 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.
One hospital or facility affiliation
- Clinix Health Services OF Colorado IncCentennial, CO
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
38 family medicine physician records list a Centennial practice address
They are 38 of the 3,008 NPPES records with a Centennial practice address, and 3,406 family medicine physician records in Colorado.
All 38 in Centennial → All 3,406 in Colorado → Every provider in Centennial →
Other family medicine physician records in Colorado
- Eric Abbott, D.O.Colorado Springs, CO1255522876
- John Abbott, D.O.Lamar, CO1255477790
- Rasha Abdelsalam, MDDenver, CO1891058467
- Baiju Abdulla, M.B.B.S.Colorado Springs, CO1316119076
- Nathalie Abisror, MDCastle Pines, CO1336634922
- Ashley Abrahamson, DOPueblo, CO1497324065
- Lara Abrahamson, MDFort Collins, CO1538145289
- Pamela Abrams, MDBroomfield, CO1073514188
- Hemamalini Achuthan, MDLakewood, CO1205982881
- Chris Adams, D.O.Limon, CO1144285248
Common questions
What is Gregory Hollar, D.O.'s NPI number?
Gregory Hollar, D.O.'s National Provider Identifier (NPI) is 1063462653, issued on May 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Hollar, D.O. located?
The NPPES record lists a practice address at 7030 S Yosemite St, Centennial, CO, 80112. Phone: (303) 721-9984. Providers update this record themselves, so call before visiting.
How can I verify Gregory Hollar, D.O.'s license?
NPPES lists Colorado license number 25423, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Hollar, D.O. prescribe under Medicare Part D?
In 2024, Gregory Hollar, D.O. had 6,638 Medicare Part D claims for 443 beneficiaries; the average among family medicine physician prescribers was 3,519. Part D covers Medicare prescriptions only.
What is Gregory Hollar, D.O.'s Medicare quality score?
The 2023 MIPS final score is 87.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.