Mary Flynn, M.D.
NPI 1992094221 · Gastroenterology Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Flynn, M.D. is a Gastroenterology Physician provider in Worcester, MA (NPI 1992094221).
Provider details
- NPI number
- 1992094221
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 080306 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
295 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Initial Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99221 | 42 | $81 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 31 | $96 |
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 30 | $5 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 29 | $49 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 27 | $103 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 54 | 52 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 36 | 36 |
| Furosemide | 34 | — |
| Lactulose | 27 | 11 |
| Pantoprazole Sodium | 27 | 11 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 21 | 21 |
| Rifaximinbrand: Xifaxan | 17 |
Practice location
Mailing address
Additional practice locations (3)
- 157 Union StMarlborough, MA 01752-1228Phone: (508) 334-3068
- 119 Belmont StWorcester, MA 01605-2903Phone: (508) 334-2846
- 21 Eastern AveWorcester, MA 01605-3094Phone: (508) 856-2500
Registry dates
- Enumerated
- 2011-04-07
- Last updated
- 2022-07-07
- Certified
- 2022-07-07
Frequently asked questions
- What is Mary Flynn's NPI number?
- Mary Flynn's National Provider Identifier (NPI) is 1992094221, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Flynn's specialty?
- Mary Flynn is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Flynn located?
- Mary Flynn's practice location on file with NPPES is 55 Lake Ave N, Worcester, MA 01655-0002.
- What is Mary Flynn's phone number?
- The practice phone number listed in the NPPES registry for Mary Flynn is (508) 334-2846.
- Does Mary Flynn accept Medicare?
- Mary Flynn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Flynn's NPI active?
- Yes — Mary Flynn's NPI (1992094221) is active in the NPPES registry as of the last update on 2022-07-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.