Stephen Mass, MD
NPI 1902969157 · Otolaryngology Physician · Lansdale, PA
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Mass, MD is a Otolaryngology Physician provider in Lansdale, PA (NPI 1902969157).
Provider details
- NPI number
- 1902969157
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD068010L (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
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
3,157 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 648 | $97 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 414 | $17 |
| Comprehensive Hearing and Speech Recognition Test92557 | 393 | $38 |
| Test to Assess Middle Ear Function92567 | 384 | $17 |
| Removal of Impacted Ear Wax69210 | 288 | $50 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 195 | 100 |
| Omeprazole | 154 | 54 |
| Ipratropium Bromide | 147 | 76 |
| Azelastine Hcl | 147 | 65 |
| Famotidine | 101 | 40 |
| Ofloxacin | 75 | 54 |
| Prednisone | 65 | 64 |
| Hydrochlorothiazide | 45 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$434 across 12 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
- 2006-12-19
- Last updated
- 2007-12-08
Frequently asked questions
- What is Stephen Mass's NPI number?
- Stephen Mass's National Provider Identifier (NPI) is 1902969157, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Mass's specialty?
- Stephen Mass is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Mass located?
- Stephen Mass's practice location on file with NPPES is 2100 N Broad St, Lansdale, PA 19446-1052.
- What is Stephen Mass's phone number?
- The practice phone number listed in the NPPES registry for Stephen Mass is (215) 368-5290.
- Does Stephen Mass accept Medicare?
- Stephen Mass is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Mass's NPI active?
- Yes — Stephen Mass's NPI (1902969157) is active in the NPPES registry as of the last update on 2007-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.