Gregory L. Kirk, M.D.
Psychiatry Physician · Denver, CO
Gregory L. Kirk, M.D. is a psychiatry physician with a practice address in Denver, Colorado, and NPI 1346377348, issued on Feb 27, 2007. Check the license (Colorado 36227, as entered in NPPES) on the Colorado Medical Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Gregory L. Kirk
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 36227 CO
Self-reported in NPPES; status is on the state search - Practice location
- 2036 East 17TH Avenue, Denver, CO 80206
- Phone
- (720) 334-8328
- Enumerated
- Feb 27, 2007
- Record last updated
- Jan 11, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (866) 897-9458
- Medicaid ID
- 07474865 CO
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 990 in Colorado → Look up another NPI →
Verify Gregory L. Kirk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 36227Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Gregory L. Kirk among 990 psychiatry physician records in Colorado
Gregory L. Kirk, M.D. is one of 990 psychiatry physician records with a practice address in Colorado. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 38% of them.
- NPI issued2007 · 38% of these records are older, 42% newer
- In a Medicare fileNo · 65% of these records are
- In the CMS Doctors and Clinicians fileNo · 35% of these records are
- Record last updated2011 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
291 psychiatry physician records list a practice address in Denver
They are 291 of the 25,068 NPPES records with a practice address in Denver, and 990 psychiatry physician records in Colorado. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 990 in Colorado → Every provider in Denver → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Mark Aloia, MDDenver, CO 802061295842607
- Michael Gendel, M.D.Denver, CO 802061578689394
- Rex McGehee, MDDenver, CO 802061649296625
- Alisha Mendoza, PMHNP-BCDenver, CO 802061669353231
- Jeffrey Metzner, M.D.Denver, CO 802061003887126
- David Muller, MDDenver, CO 802061639201304
- Ilena Norton, M.D.Denver, CO 802061114131307
- Loretta Riley, M.D.Denver, CO 802061770694010
Common questions
What is Gregory L. Kirk, M.D.'s NPI number?
Gregory L. Kirk, M.D.'s National Provider Identifier (NPI) is 1346377348, issued on Feb 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gregory L. Kirk, M.D. located?
The NPPES record lists a practice address at 2036 East 17TH Avenue, Denver, CO, 80206. Phone: (720) 334-8328. Providers update this record themselves, so call before visiting.
How can I verify Gregory L. Kirk, M.D.'s license?
NPPES lists Colorado license number 36227, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.