John Timothy Ammons, M.D.
Ophthalmology Physician · Denver, CO
John Timothy Ammons, M.D. is an ophthalmology physician with a practice address in Denver, Colorado, and NPI 1386687390, issued on Jun 14, 2006. Check the license (Colorado 32139, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Timothy Ammons
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 32139 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1666 S University Blvd, Denver, CO 80210
- Phone
- (303) 320-1777
- Enumerated
- Jun 14, 2006
- Record last updated
- Dec 18, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (303) 733-9219
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 338 in Colorado → Look up another NPI →
Also registered at 1666 S University Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amy Kelmenson, MDOphthalmology Physician1790996437
- Richard Kelmenson, MDOphthalmology Physician1609949973
- Robert Keyser, M.D.Ophthalmology Physician1881634301
- James Melzer, O.D.Optometrist1295774248
- Stephanie Melzer, O.D.Optometrist1518219856
Verify John Timothy Ammons in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 32139Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% fewer Medicare Part D claims than the average ophthalmology physician in 2024
740 Medicare Part D claims for 173 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 44% of claims.
Most prescribed
- Latanoprost333 claims
- Vyzulta59 claims
- Timolol Maleate58 claims
- Simbrinza43 claims
- Dorzolamide-Timolol38 claims
- Lumigan37 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $18.84
1 payment: food and beverage; the largest payer was Alexion Pharmaceuticals, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 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.
John Timothy Ammons among 338 ophthalmology physician records in Colorado
John Timothy Ammons, M.D. is one of 338 ophthalmology 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 2006, is newer than 20% of them.
- NPI issued2006 · 20% of these records are older, 45% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2013 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Colorado
There are 338 ophthalmology physician records in Colorado.
All 338 in Colorado → Every provider in Denver → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Laura Cannavo, M.D.Denver, CO 802101538103650
- William Hines, MDDenver, CO 802101356349369
- Nancy Houlder, MDDenver, CO 802101184686081
- Kenneth Hovland, MDDenver, CO 802101245237395
- Peter Hovland, MD PHDDenver, CO 802101720047210
- Jason Jacobs, MDDenver, CO 802101750379954
- Holly Kent, MDDenver, CO 802101700873288
- Robert Keyser, M.D.Denver, CO 802101881634301
Common questions
What is John Timothy Ammons, M.D.'s NPI number?
John Timothy Ammons, M.D.'s National Provider Identifier (NPI) is 1386687390, issued on Jun 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Timothy Ammons, M.D. located?
The NPPES record lists a practice address at 1666 S University Blvd, Denver, CO, 80210. Phone: (303) 320-1777. Providers update this record themselves, so call before visiting.
How can I verify John Timothy Ammons, M.D.'s license?
NPPES lists Colorado license number 32139, 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 John Timothy Ammons, M.D. prescribe under Medicare Part D?
In 2024, John Timothy Ammons, M.D. had 740 Medicare Part D claims for 173 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is John Timothy Ammons, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.