Nicholas Orfanidis, MD
NPI 1669638573 · Gastroenterology Physician · Philadelphia, PA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicholas Orfanidis, MD is a Gastroenterology Physician provider in Philadelphia, PA (NPI 1669638573).
Provider details
- NPI number
- 1669638573
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MT186282 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,056 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 217 | $81 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 165 | $134 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 138 | $134 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 118 | $95 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 76 | $106 |
| Biopsy of Large Bowel Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 476 | 143 |
| Omeprazole | 231 | 69 |
| Famotidine | 166 | 60 |
| Dicyclomine Hcl | 142 | 47 |
| Sucralfate | 86 | 33 |
| Diphenoxylate Hcl/Atropinebrand: Diphenoxylate-Atropine | 57 | 15 |
| Linaclotidebrand: Linzess | 51 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$934 across 56 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
Registry dates
- Enumerated
- 2008-07-30
- Last updated
- 2024-10-28
- Certified
- 2024-10-28
Frequently asked questions
- What is Nicholas Orfanidis's NPI number?
- Nicholas Orfanidis's National Provider Identifier (NPI) is 1669638573, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Orfanidis's specialty?
- Nicholas Orfanidis is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Nicholas Orfanidis located?
- Nicholas Orfanidis's practice location on file with NPPES is 1101 Chestnut St, Philadelphia, PA 19107-3612.
- What is Nicholas Orfanidis's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Orfanidis is (215) 955-8900.
- Does Nicholas Orfanidis accept Medicare?
- Nicholas Orfanidis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicholas Orfanidis's NPI active?
- Yes — Nicholas Orfanidis's NPI (1669638573) is active in the NPPES registry as of the last update on 2024-10-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.