Richard Feldstein, M.D., MSC.
NPI 1851533699 · Gastroenterology Physician · Commack, NY
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Richard Feldstein, M.D., MSC. is a Gastroenterology Physician provider in Commack, NY (NPI 1851533699).
Provider details
- NPI number
- 1851533699
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., MSC.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 003361 (NY)
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
2,761 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,258 | $146 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 315 | $104 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 280 | $88 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 183 | $192 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 157 | $132 |
| Biopsy of Large Bowel Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 633 | 213 |
| Famotidine | 217 | 93 |
| Omeprazole | 194 | 82 |
| Linaclotidebrand: Linzess | 77 | 36 |
| Mesalamine | 76 | 19 |
| Dexlansoprazolebrand: Dexlansoprazole Dr | 72 | 26 |
| Lipase/Protease/Amylasebrand: Creon | 67 | 17 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,537 across 218 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
- 2009-03-25
- Last updated
- 2022-02-04
- Certified
- 2022-02-04
Frequently asked questions
- What is Richard Feldstein's NPI number?
- Richard Feldstein's National Provider Identifier (NPI) is 1851533699, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Richard Feldstein's specialty?
- Richard Feldstein is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Richard Feldstein located?
- Richard Feldstein's practice location on file with NPPES is 1092 Jericho Tpke Ste 2s, Commack, NY 11725-3016.
- What is Richard Feldstein's phone number?
- The practice phone number listed in the NPPES registry for Richard Feldstein is (631) 543-8660.
- Does Richard Feldstein accept Medicare?
- Richard Feldstein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Richard Feldstein's NPI active?
- Yes — Richard Feldstein's NPI (1851533699) is active in the NPPES registry as of the last update on 2022-02-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.