NPPES file of Aug 9, 2026

Joseph O. Billig, M.D.

Anesthesiology Physician · Denver, CO

Joseph O. Billig, M.D. is an anesthesiology physician with a practice address in Denver, Colorado, and NPI 1467408708, issued on May 26, 2006. Check the license (Colorado 36746, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1467408708
Name
Joseph O. Billig
Credential
M.D.
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
36746 CO
Self-reported in NPPES; status is on the state search
Practice location
2045 N Franklin St, Denver, CO 80205
Phone
(303) 338-4545
Enumerated
May 26, 2006
Record last updated
Mar 1, 2023
Medicaid ID
00783749 CO
Medicare enrollment
Enrolled (PECOS I20101101000775); accepts Medicare assignment
Medical or professional school
University Of Nebraska College Of Medicine, 1991
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest anesthesiology physician records → All 1,202 in Colorado → Look up another NPI →

Also registered at 2045 N Franklin St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Joseph Abruzzo, M.D.Cardiovascular Disease Physician1336276385
  2. Alicia Adams, O.D.Optometrist1790072643
  3. Gareth Adams, MDNeurological Surgery Physician1750611158
  4. Alison Agner, M.D.Obstetrics & Gynecology Physician1467662833
  5. Adele Alcocer, RN BSNRegistered Nurse1285176495
  6. Leonardo Alfaro, M.D.Surgery Physician1326251398

Verify Joseph O. Billig in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersColorado Medical Board
    Search for license 36746    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Colorado license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Richard B Green MD PLLCDenver, CO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Joseph O. Billig among 1,202 anesthesiology physician records in Colorado

Joseph O. Billig, M.D. is one of 1,202 anesthesiology physician records with a practice address in Colorado. 75% 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 13% of them.

  • NPI issued2006 · 13% of these records are older, 54% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated1991 · median 2006 among the 824 with a school on file
  • Record last updated2023 · 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 207L00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anesthesiology Physician providers in Colorado

There are 1,202 anesthesiology physician records in Colorado.

All 1,202 in Colorado → Every provider in Denver → Anesthesiology Physician nationwide →

The 8 anesthesiology physician records with the nearest ZIP codes

  1. David Barclay, MDDenver, CO 802051033265616
  2. Steven Ellstrom, MDDenver, CO 802051427098623
  3. Joy Guth, MDDenver, CO 802051992851679
  4. Veronica Hailes, M.D.Denver, CO 802051376577031
  5. Michael Heller, MDDenver, CO 802051093861619
  6. Matthew Koehler, MDDenver, CO 802051578600847
  7. Mauricio Mejia, M.D.Denver, CO 802051093710352
  8. Matthew Montgomery, MDDenver, CO 802051063457992

Common questions

What is Joseph O. Billig, M.D.'s NPI number?

Joseph O. Billig, M.D.'s National Provider Identifier (NPI) is 1467408708, issued on May 26, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Joseph O. Billig, M.D. located?

The NPPES record lists a practice address at 2045 N Franklin St, Denver, CO, 80205. Phone: (303) 338-4545. Providers update this record themselves, so call before visiting.

How can I verify Joseph O. Billig, M.D.'s license?

NPPES lists Colorado license number 36746, 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. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.