Robert Alan Nathan, MD
Allergy & Immunology (Internal Medicine) Physician · Colorado Springs, CO
Robert Alan Nathan, MD is an allergy & immunology (internal medicine) physician with a practice address in Colorado Springs, Colorado, and NPI 1487648077, issued on Sep 9, 2005. Check the license (Colorado 21249, as entered in NPPES) on the Colorado Medical Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Robert Alan Nathan
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology (Internal Medicine) Physician 207RA0201X
- License numbers
- 21249 CO
25825 FL
Self-reported in NPPES; status is on the state search - Practice location
- 2709 N Tejon St, Colorado Springs, CO 80907
- Phone
- (719) 473-0872
- Enumerated
- Sep 9, 2005
- Record last updated
- Mar 7, 2023
- Fax
- (719) 630-3658
- Medicaid ID
- 01212497 CO
- Entity
- Type 1 · individual
Also registered at 2709 N Tejon St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Robert Alan Nathan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 21249Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Allergy & Immunology (Internal Medicine) Physician providers in Colorado
There are 12 allergy & immunology (internal medicine) physician records in Colorado. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other allergy & immunology (internal medicine) physician records in Colorado
- Allen Adinoff, MDAurora, CO1386614691
- Jason Catanzaro, M.D.Lone Tree, CO1780845768
- W Donald Cooke, MDDurango, CO1558437681
- Stephen Dreskin, MDAurora, CO1457441131
- Andrew Fontenot, MDAurora, CO1962592642
- Richard Luzietti, M.D.Aurora, CO1336293745
- Kevin O'Brien, M.D.Thornton, CO1134131733
- Robert Pace, MDLongmont, CO1861404220
- Snehal Patel, D.OLakewood, CO1275897001
- Paul Schkade, MDLakewood, CO1306865498
Common questions
What is Robert Alan Nathan, MD's NPI number?
Robert Alan Nathan, MD's National Provider Identifier (NPI) is 1487648077, issued on Sep 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Robert Alan Nathan, MD located?
The NPPES record lists a practice address at 2709 N Tejon St, Colorado Springs, CO, 80907. Phone: (719) 473-0872. Providers update this record themselves, so call before visiting.
How can I verify Robert Alan Nathan, MD's license?
NPPES lists Colorado license number 21249, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.