Richard A. Zak, MD
Gastroenterology Physician · Pagosa Springs, CO
Richard A. Zak, MD is a gastroenterology physician with a practice address in Pagosa Springs, Colorado, and NPI 1316930506, issued on Aug 24, 2005. Check the license (Colorado DR.0046511, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Richard A. Zak
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- DR.0046511 CO
G43123 CA
Self-reported in NPPES; status is on the state search - Practice location
- 95 S Pagosa Blvd, Pagosa Springs, CO 81147
- Phone
- (970) 731-3700
- Enumerated
- Aug 24, 2005
- Record last updated
- Mar 23, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (970) 731-0504
- Medicaid ID
- 00G431230 CA
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 334 in Colorado → Look up another NPI →
Also registered at 95 S Pagosa Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ralph Battels, MDEmergency Medicine Physician1952441859
- Robert Brown, M.D.Family Medicine Physician1316997638
- Susanne Bryant, RDNRegistered Dietitian1932693389
- Julie Buchner, MDFamily Medicine Physician1336330158
Verify Richard A. Zak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0046511Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average gastroenterology physician in 2024
46 Medicare Part D claims, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Paroxetine Hcl15 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.
Richard A. Zak among 334 gastroenterology physician records in Colorado
Richard A. Zak, MD is one of 334 gastroenterology physician records with a practice address in Colorado. 84% 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, 93% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 77% of these records are
- Record last updated2017 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Colorado
There are 334 gastroenterology physician records in Colorado.
All 334 in Colorado → Every provider in Pagosa Springs → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Jesus Carale, MDLa Junta, CO 810501043236961
- Camille Azar, M.D.Pueblo, CO 810041265477046
- Christopher Calcagno, D.O.Pueblo, CO 810031013178508
- Paula Dionisio, M.D.Pueblo, CO 810031669457263
- Henrique Fernandez, MDPueblo, CO 810031174770614
- William Murchison, MDPueblo, CO 810031417146846
- Lirio Polintan, MDPueblo, CO 810031437115409
- Maritza Proano, M.D.Pueblo, CO 810031194742676
Common questions
What is Richard A. Zak, MD's NPI number?
Richard A. Zak, MD's National Provider Identifier (NPI) is 1316930506, issued on Aug 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Richard A. Zak, MD located?
The NPPES record lists a practice address at 95 S Pagosa Blvd, Pagosa Springs, CO, 81147. Phone: (970) 731-3700. Providers update this record themselves, so call before visiting.
How can I verify Richard A. Zak, MD's license?
NPPES lists Colorado license number DR.0046511, 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 Richard A. Zak, MD prescribe under Medicare Part D?
In 2024, Richard A. Zak, MD had 46 Medicare Part D claims; the average among gastroenterology physician prescribers was 811. 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.