Gregory Lam, D.O.
NPI 1861416596 · Gastroenterology Physician · Cincinnati, OH
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Lam, D.O. is a Gastroenterology Physician provider in Cincinnati, OH (NPI 1861416596).
Provider details
- NPI number
- 1861416596
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 03484 (KY)
Specialties & taxonomies
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
19 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
714 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 | 160 | $231 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 124 | $111 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 124 | $74 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 62 | $83 |
| Dilation of Esophagus43450 | 43 | $37 |
| Biopsy of Large Bowel Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 264 | 260 |
| Pantoprazole Sodium | 184 | 72 |
| Omeprazole | 47 | 21 |
| Dupilumabbrand: Dupixent Pen | 25 | — |
| Dicyclomine Hcl | 20 | 12 |
| Colestipol Hcl | 20 | — |
| Lactulose | 17 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,716 across 47 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
- 2006-07-26
- Last updated
- 2019-11-18
Frequently asked questions
- What is Gregory Lam's NPI number?
- Gregory Lam's National Provider Identifier (NPI) is 1861416596, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Lam's specialty?
- Gregory Lam is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Lam located?
- Gregory Lam's practice location on file with NPPES is 7661 Beechmont Ave Ste 120, Cincinnati, OH 45255-4234.
- What is Gregory Lam's phone number?
- The practice phone number listed in the NPPES registry for Gregory Lam is (513) 231-9010.
- Does Gregory Lam accept Medicare?
- Gregory Lam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Lam's NPI active?
- Yes — Gregory Lam's NPI (1861416596) is active in the NPPES registry as of the last update on 2019-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.