Mark Pankonin, M.D./PH.D.
NPI 1356509947 · Gastroenterology Physician · Saginaw, MI
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Pankonin, M.D./PH.D. is a Gastroenterology Physician provider in Saginaw, MI (NPI 1356509947).
Provider details
- NPI number
- 1356509947
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D./PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2021-02901 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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 tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
6 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
350 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 113 | $229 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High RiskG0121 | 51 | $157 |
| Diagnostic Exam of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43235 | 40 | $93 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 39 | $105 |
| Diagnostic Exam of Large Bowel Using a Flexible Endoscope45378 | 28 | $157 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 174 | 173 |
| Pantoprazole Sodium | 113 | 32 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 82 | 74 |
| Omeprazole | 75 | 27 |
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 61 | 61 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 33 | 33 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$41 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (5)
- 119 Belmont StWorcester, MA 01605-2903Phone: (508) 334-3068
- 55 Lake Ave NWorcester, MA 01655-0002Phone: (508) 334-3068
- 21 Eastern AveWorcester, MA 01605-3094Phone: (508) 856-8350
- 11155 Dunn Rd Ste 309eSaint Louis, MO 63136-6111Phone: (314) 953-8799Fax: (314) 273-0149
- 262 Leroy George DrClyde, NC 28721-7430Phone: (828) 456-7311
Registry dates
- Enumerated
- 2008-05-30
- Last updated
- 2025-12-12
- Certified
- 2025-12-12
Frequently asked questions
- What is Mark Pankonin's NPI number?
- Mark Pankonin's National Provider Identifier (NPI) is 1356509947, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Pankonin's specialty?
- Mark Pankonin is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Pankonin located?
- Mark Pankonin's practice location on file with NPPES is 900 Cooper Ave, Saginaw, MI 48602-5182.
- What is Mark Pankonin's phone number?
- The practice phone number listed in the NPPES registry for Mark Pankonin is (989) 583-7460.
- Does Mark Pankonin accept Medicare?
- Mark Pankonin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Pankonin's NPI active?
- Yes — Mark Pankonin's NPI (1356509947) is active in the NPPES registry as of the last update on 2025-12-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.