Julia I. Rifkin, MD
Endocrinology, Diabetes & Metabolism Physician · Denver, CO
Julia I. Rifkin, MD is an endocrinology, diabetes & metabolism physician with a practice address in Denver, Colorado, and NPI 1689757296, issued on Oct 24, 2006. Check the license (Colorado 26186, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Julia I. Rifkin
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 26186 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1721 E 19TH Ave, Denver, CO 80218
- Phone
- (303) 869-2160
- Enumerated
- Oct 24, 2006
- Record last updated
- Jul 20, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (303) 869-2544
- Medicaid IDs
- 49280732 CO
01261866 CO - Medicare enrollment
- Enrolled (PECOS I20100208000664); accepts Medicare assignment
- Medical or professional school
- University Of Colorado School Of Medicine, Denver, 1983
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 149 in Colorado → Look up another NPI →
Also registered at 1721 E 19TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Julia I. Rifkin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 26186Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
3,997 Medicare Part D claims for 411 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 46% of claims.
Most prescribed
- Levothyroxine Sodium516 claims
- Metformin Hcl244 claims
- Synthroid219 claims
- Mounjaro195 claims
- Atorvastatin Calcium152 claims
- Ozempic149 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.
The MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- University Physicians IncorporatedAurora, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Julia I. Rifkin among 149 endocrinology, diabetes & metabolism physician records in Colorado
Julia I. Rifkin, MD 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 fileYes · 72% of these records are
- Graduated1983 · median 2002 among the 106 with a school on file
- Record last updated2010 · 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 Denver → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Sarah Bull, MDDenver, CO 802181427165547
- Leslie Gamache, MDDenver, CO 802181851303002
- Gregory Lund, M.D.Denver, CO 802181265468342
- Sheila Maier, D.O.Denver, CO 802181033599162
- Katlyn SawyerDenver, CO 802181124600150
- Daniel Citron, M.D.Denver, CO 802201861442410
- Alex Goldsmith, M.D.Denver, CO 802201417907064
- Romana Haas, MDDenver, CO 802201386739258
Common questions
What is Julia I. Rifkin, MD's NPI number?
Julia I. Rifkin, MD's National Provider Identifier (NPI) is 1689757296, issued on Oct 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Julia I. Rifkin, MD located?
The NPPES record lists a practice address at 1721 E 19TH Ave, Denver, CO, 80218. Phone: (303) 869-2160. Providers update this record themselves, so call before visiting.
How can I verify Julia I. Rifkin, MD's license?
NPPES lists Colorado license number 26186, 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 Julia I. Rifkin, MD prescribe under Medicare Part D?
In 2024, Julia I. Rifkin, MD had 3,997 Medicare Part D claims for 411 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Julia I. Rifkin, MD's MIPS final score?
The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.