Erin Theisen, MD, PHD
NPI 1548720287 · Dermatology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erin Theisen, MD, PHD is a Dermatology Physician provider in Boston, MA (NPI 1548720287).
Provider details
- NPI number
- 1548720287
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Female
- Sole proprietor
- No
- License
- 1013754 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
137 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 65 | $102 |
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 38 | $2 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 20 | $55 |
| Destruction of Skin Growth, 1-14 Growths17110 | 14 | $76 |
Typical Medicare-allowed amounts for these services range $2–$102 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 37 | 19 |
| Dupilumabbrand: Dupixent Pen | 32 | — |
| Triamcinolone Acetonide | 28 | 21 |
| Clobetasol Propionate | 24 | 12 |
| Prednisone | 20 | — |
| Dupilumabbrand: Dupixent Syringe | 15 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-03-20
- Last updated
- 2023-08-24
- Certified
- 2023-08-24
Frequently asked questions
- What is Erin Theisen's NPI number?
- Erin Theisen's National Provider Identifier (NPI) is 1548720287, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erin Theisen's specialty?
- Erin Theisen is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Erin Theisen located?
- Erin Theisen's practice location on file with NPPES is 221 Longwood Ave, Boston, MA 02115-5817.
- What is Erin Theisen's phone number?
- The practice phone number listed in the NPPES registry for Erin Theisen is (617) 732-4918.
- Does Erin Theisen accept Medicare?
- Erin Theisen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erin Theisen's NPI active?
- Yes — Erin Theisen's NPI (1548720287) is active in the NPPES registry as of the last update on 2023-08-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.