Carolyn Commissaris, MD
NPI 1700236965 · Emergency Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carolyn Commissaris, MD is a Emergency Medicine Physician provider in Boston, MA (NPI 1700236965).
Provider details
- NPI number
- 1700236965
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 4301501905 (MI)
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 tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
364 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 254 | $178 |
| Critical Care, First 30-74 Minutes99291 | 30 | $220 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 26 | $123 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 21 | $180 |
| Ultrasound of Heart, Follow-Up93308 | 20 | $26 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 13 | $120 |
Practice location
Mailing address
Additional practice locations (1)
- 1500 E Medical Center DrAnn Arbor, MI 48109-5000Phone: (734) 936-4000
Registry dates
- Enumerated
- 2016-06-20
- Last updated
- 2022-08-23
- Certified
- 2022-08-22
Frequently asked questions
- What is Carolyn Commissaris's NPI number?
- Carolyn Commissaris's National Provider Identifier (NPI) is 1700236965, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carolyn Commissaris's specialty?
- Carolyn Commissaris is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Carolyn Commissaris located?
- Carolyn Commissaris's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6110.
- What is Carolyn Commissaris's phone number?
- The practice phone number listed in the NPPES registry for Carolyn Commissaris is (617) 732-5500.
- Does Carolyn Commissaris accept Medicare?
- Carolyn Commissaris is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carolyn Commissaris's NPI active?
- Yes — Carolyn Commissaris's NPI (1700236965) is active in the NPPES registry as of the last update on 2022-08-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.