Igor Borisov, MD
Internal Medicine Physician · Denver, CO
Igor Borisov, MD is an internal medicine physician with a practice address in Denver, Colorado, and NPI 1235134008, issued on Jun 16, 2005. Check the license (Colorado 40867, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Igor Borisov
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 40867 CO
Self-reported in NPPES; status is on the state search - Practice location
- 4500 E 9TH Ave, Denver, CO 80220
- Phone
- (303) 394-2152
- Enumerated
- Jun 16, 2005
- Record last updated
- Nov 10, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (303) 394-2496
- Medicaid ID
- 20752016 CO
- Medicare enrollment
- Enrolled (PECOS I20100201000796); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,046 in Colorado → Look up another NPI →
Also registered at 4500 E 9TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kara Alexandrovic, M.DObstetrics & Gynecology Physician1679715361
- Miguel Alvarado, PA-CMedical Physician Assistant1689891475
- Donald Aptekar, M.D.Obstetrics & Gynecology Physician1023103868
- Peter Berndt, M.D.Psychiatry Physician1215945423
- John Bershof, M.D.Specialist1316029937
- Lesley Bevan, MDObstetrics & Gynecology Physician1154513307
Verify Igor Borisov in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 40867Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% more Medicare Part D claims than the average internal medicine physician in 2024
5,843 Medicare Part D claims for 257 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 237 claims were for opioids.
Most prescribed
- Atorvastatin Calcium287 claims
- Levothyroxine Sodium239 claims
- Omeprazole228 claims
- Losartan Potassium194 claims
- Amlodipine Besylate169 claims
- Tamsulosin Hcl142 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.
Industry payments in 2024: $706.51
33 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Bills Medicare through 2 group practices
- Legacy Healthcare Services IncDenver, CO
- Ninth Avenue Internal Medicine LLCDenver, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Igor Borisov among 2,046 internal medicine physician records in Colorado
Igor Borisov, MD is one of 2,046 internal medicine 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1994 · median 2006 among the 1,090 with a school on file
- Record last updated2009 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
493 internal medicine physician records list a practice address in Denver
They are 493 of the 25,068 NPPES records with a practice address in Denver, and 2,046 internal medicine physician records in Colorado.
All 2,046 in Colorado → Every provider in Denver → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Brent Cohen, MDDenver, CO 802201427042142
- Jennifer Gaudiani, MDDenver, CO 802201831172063
- Ravi Gopal, M.D.Denver, CO 802201376517342
- Stanley Kerstein, MDDenver, CO 802201750325650
- Thomas Li, MDDenver, CO 802201023005576
- Connor McBryde, M.D.Denver, CO 802201760459275
- Michael Metros, MDDenver, CO 802201134186646
- Thomas Meyer, MDDenver, CO 802201740245406
Common questions
What is Igor Borisov, MD's NPI number?
Igor Borisov, MD's National Provider Identifier (NPI) is 1235134008, issued on Jun 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Igor Borisov, MD located?
The NPPES record lists a practice address at 4500 E 9TH Ave, Denver, CO, 80220. Phone: (303) 394-2152. Providers update this record themselves, so call before visiting.
How can I verify Igor Borisov, MD's license?
NPPES lists Colorado license number 40867, 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 Igor Borisov, MD prescribe under Medicare Part D?
In 2024, Igor Borisov, MD had 5,843 Medicare Part D claims for 257 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.