Gregory A. Ambuske, D.O.
Internal Medicine Physician · Colorado Springs, CO
Gregory A. Ambuske, D.O. is an internal medicine physician with a practice address in Colorado Springs, Colorado, and NPI 1093920746, issued on May 14, 2007. Check the license (Colorado DR.0056364, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregory A. Ambuske
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- DR.0056364 CO
OS013889 PA
Self-reported in NPPES; status is on the state search - Practice location
- 6915 Tutt Blvd Ste 110B, Colorado Springs, CO 80923
- Phone
- (719) 445-1292
- Enumerated
- May 14, 2007
- Record last updated
- Jan 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (719) 591-6486
- Medicare enrollment
- Enrolled (PECOS I20170202001673); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2003
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,046 in Colorado → Look up another NPI →
Also registered at 6915 Tutt Blvd Ste 110B
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Melodie Collins, M.A, N.C.CMental Health Counselor1316275647
- John Evans, PH.D., LCSWClinical Social Worker1235329236
- Michael Herriott, DOPsychiatry Physician1285277038
- Kevin Kilimann, MDPsychiatry Physician1194767566
- Tzu Hui Lee, NPPsychiatric/Mental Health Nurse Practitioner1477923407
Verify Gregory A. Ambuske in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0056364Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average internal medicine physician in 2024
817 Medicare Part D claims for 164 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 34 claims were for opioids.
Most prescribed
- Atorvastatin Calcium41 claims
- Levothyroxine Sodium30 claims
- Amlodipine Besylate26 claims
- Lisinopril26 claims
- Diazepam25 claims
- Gabapentin19 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.
Bills Medicare through one group practice
- Salida Hospital DistrictFairplay, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory A. Ambuske among 2,046 internal medicine physician records in Colorado
Gregory A. Ambuske, D.O. is one of 2,046 internal medicine physician records with a practice address in Colorado. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 39% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2003 · median 2006 among the 1,090 with a school on file
- Record last updated2021 · 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 Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
169 internal medicine physician records list a practice address in Colorado Springs
They are 169 of the 19,771 NPPES records with a practice address in Colorado Springs, and 2,046 internal medicine physician records in Colorado.
All 2,046 in Colorado → Every provider in Colorado Springs → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jocelyn De Yao, M.D.Colorado Springs, CO 809231366670416
- Rewaida Hall, MDColorado Springs, CO 809221902426166
- Jeremy Jarecke, D.O.Colorado Springs, CO 809241588821060
- Nileena Philip, MDColorado Springs, CO 809221821433855
- Royce Solano, MDColorado Springs, CO 809221184691982
- Rebecca Plumer, MDColorado Springs, CO 809211891998662
- Renna Becerra, M.D.Colorado Springs, CO 809201831464189
- Belisario Bejarano, MDColorado Springs, CO 809201538540687
Common questions
What is Gregory A. Ambuske, D.O.'s NPI number?
Gregory A. Ambuske, D.O.'s National Provider Identifier (NPI) is 1093920746, issued on May 14, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gregory A. Ambuske, D.O. located?
The NPPES record lists a practice address at 6915 Tutt Blvd Ste 110B, Colorado Springs, CO, 80923. Phone: (719) 445-1292. Providers update this record themselves, so call before visiting.
How can I verify Gregory A. Ambuske, D.O.'s license?
NPPES lists Colorado license number DR.0056364, 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 A. Ambuske, D.O. prescribe under Medicare Part D?
In 2024, Gregory A. Ambuske, D.O. had 817 Medicare Part D claims for 164 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.