Keith George Cook, M. D.
Family Medicine Physician · Thornton, CO
Keith George Cook, M. D. is a family medicine physician with a practice address in Thornton, Colorado, and NPI 1437225786, issued on Nov 28, 2006. Check the license (Colorado 29364, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Keith George Cook
- Credential
- M. D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 29364 CO
Self-reported in NPPES; status is on the state search - Practice location
- 3959 E 120TH Ave, Thornton, CO 80233
- Phone
- (303) 452-4343
- Enumerated
- Nov 28, 2006
- Record last updated
- May 8, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 01293646 CO
- Medicare enrollment
- Enrolled (PECOS I20180209000227); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 1986
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,563 in Colorado → Look up another NPI →
Also registered at 3959 E 120TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Allan Koenig, M.D.General Practice Physician1043248966
Verify Keith George Cook in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 29364Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average family medicine physician in 2024
201 Medicare Part D claims for 21 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Lisinopril32 claims
- Metformin Hcl Er18 claims
- Synthroid14 claims
- Ketorolac Tromethamine13 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
- Dhhs Ihs Phoenix AreaSupai, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Keith George Cook among 3,563 family medicine physician records in Colorado
Keith George Cook, M. D. is one of 3,563 family medicine physician records with a practice address in Colorado. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 56% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1986 · median 2008 among the 2,077 with a school on file
- Record last updated2013 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
47 family medicine physician records list a practice address in Thornton
They are 47 of the 2,234 NPPES records with a practice address in Thornton, and 3,563 family medicine physician records in Colorado.
All 3,563 in Colorado → Every provider in Thornton → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Eric Barnhart, MDThornton, CO 802331194779967
- William Cooper, MDThornton, CO 802331689611733
- John Gehred, M.D.Thornton, CO 802331548222763
- James Gregory, MDThornton, CO 802331437105210
- Kenneth Hahn, DOThornton, CO 802331922005818
- Ann Imhof, MDThornton, CO 802331922054790
- David Landy, M.D.Thornton, CO 802331013972827
- Suzanne Nash, MDThornton, CO 802331336146273
Common questions
What is Keith George Cook, M. D.'s NPI number?
Keith George Cook, M. D.'s National Provider Identifier (NPI) is 1437225786, issued on Nov 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Keith George Cook, M. D. located?
The NPPES record lists a practice address at 3959 E 120TH Ave, Thornton, CO, 80233. Phone: (303) 452-4343. Providers update this record themselves, so call before visiting.
How can I verify Keith George Cook, M. D.'s license?
NPPES lists Colorado license number 29364, 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 Keith George Cook, M. D. prescribe under Medicare Part D?
In 2024, Keith George Cook, M. D. had 201 Medicare Part D claims for 21 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.