Stephen Humm, MD
NPI 1134256597 · Gastroenterology Physician · Silver Spring, MD
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Humm, MD is a Gastroenterology Physician provider in Silver Spring, MD (NPI 1134256597).
Provider details
- NPI number
- 1134256597
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- L-228282 (MA)
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
825 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 | 311 | $141 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 140 | $127 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 97 | $271 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 82 | $117 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 73 | $101 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Famotidine | 268 | 107 |
| Pantoprazole Sodium | 198 | 71 |
| Omeprazole | 163 | 59 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 128 | 122 |
| Sucralfate | 77 | 24 |
| Dexlansoprazolebrand: Dexlansoprazole Dr | 63 | 19 |
| Linaclotidebrand: Linzess | 60 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$101 across 5 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
- 2007-02-27
- Last updated
- 2016-07-07
Frequently asked questions
- What is Stephen Humm's NPI number?
- Stephen Humm's National Provider Identifier (NPI) is 1134256597, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Humm's specialty?
- Stephen Humm is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Humm located?
- Stephen Humm's practice location on file with NPPES is 10801 Lockwood Dr, Silver Spring, MD 20901-1556.
- What is Stephen Humm's phone number?
- The practice phone number listed in the NPPES registry for Stephen Humm is (301) 593-2002.
- Does Stephen Humm accept Medicare?
- Stephen Humm is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Humm's NPI active?
- Yes — Stephen Humm's NPI (1134256597) is active in the NPPES registry as of the last update on 2016-07-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.