Regan Bergmark, M.D.
NPI 1104110683 · Otolaryngology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Regan Bergmark, M.D. is a Otolaryngology Physician provider in Boston, MA (NPI 1104110683).
Provider details
- NPI number
- 1104110683
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 266385 (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
15 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
585 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) |
|---|---|---|
| Diagnostic Exam of Nasal Passages Using an Endoscope31231 | 244 | $211 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 86 | $121 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 72 | $139 |
| Biopsy Or Removal of Nasal Polyp Or Tissue Using an Endoscope31237 | 44 | $331 |
| Diagnostic Exam of Voice Box Using a Flexible Endoscope31575 | 39 | $145 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 29 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azelastine Hcl | 68 | 34 |
| Ipratropium Bromide | 51 | 30 |
| Fluticasone Propionate | 22 | — |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 20 | 18 |
| Fluocinolone Acetonide Oil | 12 | — |
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 no Part D record, 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
- 2011-06-02
- Last updated
- 2016-07-01
Frequently asked questions
- What is Regan Bergmark's NPI number?
- Regan Bergmark's National Provider Identifier (NPI) is 1104110683, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Regan Bergmark's specialty?
- Regan Bergmark is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Regan Bergmark located?
- Regan Bergmark's practice location on file with NPPES is 243 Charles St, Boston, MA 02114-3002.
- What is Regan Bergmark's phone number?
- The practice phone number listed in the NPPES registry for Regan Bergmark is (617) 523-7900.
- Does Regan Bergmark accept Medicare?
- Regan Bergmark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Regan Bergmark's NPI active?
- Yes — Regan Bergmark's NPI (1104110683) is active in the NPPES registry as of the last update on 2016-07-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.