James Kirven Speed, M.D.
Endocrinology, Diabetes & Metabolism Physician · Greeley, CO
James Kirven Speed, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Greeley, Colorado, and NPI 1811059660, issued on Dec 15, 2006. Check the license (Colorado DR0052583, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- James Kirven Speed
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- DR0052583 CO
29874 NC
Self-reported in NPPES; status is on the state search - Practice location
- 1800 15TH St Ste 200, Greeley, CO 80631
- Phone
- (970) 378-4676
- Enumerated
- Dec 15, 2006
- Record last updated
- May 20, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (970) 378-4315
- Medicaid ID
- 18458578 CO
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 149 in Colorado → Look up another NPI →
Also registered at 1800 15TH St Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify James Kirven Speed in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR0052583Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
75 Medicare Part D claims for 43 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of 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.
James Kirven Speed among 149 endocrinology, diabetes & metabolism physician records in Colorado
James Kirven Speed, M.D. is one of 149 endocrinology, diabetes & metabolism physician records with a practice address in Colorado. 83% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 49% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2015 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Colorado
There are 149 endocrinology, diabetes & metabolism physician records in Colorado.
All 149 in Colorado → Every provider in Greeley → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Richard Millstein, D.O.Greeley, CO 806311407101975
- Gregory Hughes, MDLoveland, CO 805381477520997
- Dilasha Katwal, M.D.Loveland, CO 805381841604790
- Maria Paula Reyes Ramirez, MDLoveland, CO 805381720615230
- Sindhura TrivediLoveland, CO 805381891922522
- Meriam Izon, M.D.Fort Collins, CO 805281093723231
- Polina Kaloyanova, MDFort Collins, CO 805281073707667
- Alejandro Munoz, M.D.Fort Collins, CO 805281568639391
Common questions
What is James Kirven Speed, M.D.'s NPI number?
James Kirven Speed, M.D.'s National Provider Identifier (NPI) is 1811059660, issued on Dec 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Kirven Speed, M.D. located?
The NPPES record lists a practice address at 1800 15TH St Ste 200, Greeley, CO, 80631. Phone: (970) 378-4676. Providers update this record themselves, so call before visiting.
How can I verify James Kirven Speed, M.D.'s license?
NPPES lists Colorado license number DR0052583, 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 James Kirven Speed, M.D. prescribe under Medicare Part D?
In 2024, James Kirven Speed, M.D. had 75 Medicare Part D claims for 43 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.