Chelsea Semrau, MS, PA-C
NPI 1699116582 · Surgical Physician Assistant · Hartford, CT
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chelsea Semrau, MS, PA-C is a Surgical Physician Assistant provider in Hartford, CT (NPI 1699116582).
Provider details
- NPI number
- 1699116582
- Entity type
- Individual
- Primary specialty
- Surgical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MS, PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 016678 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Allopathic & Osteopathic Physicians
Physician Assistants & Advanced Practice Nursing Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 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
109 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 | 58 | $86 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 26 | $85 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 25 | $127 |
Typical Medicare-allowed amounts for these services range $85–$127 (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 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 46 | 17 |
| Prochlorperazine Maleate | 45 | 29 |
| Ondansetron Hcl | 38 | 30 |
| Apixabanbrand: Eliquis | 35 | — |
| Oxycodone Hcl | 32 | 21 |
| Dexamethasone | 30 | 24 |
| Montelukast Sodium | 26 | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-07-09
- Last updated
- 2022-08-10
- Certified
- 2022-08-10
Frequently asked questions
- What is Chelsea Semrau's NPI number?
- Chelsea Semrau's National Provider Identifier (NPI) is 1699116582, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chelsea Semrau's specialty?
- Chelsea Semrau is listed in the NPPES registry with a primary specialty of Surgical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Chelsea Semrau located?
- Chelsea Semrau's practice location on file with NPPES is 85 Seymour St Ste 705, Hartford, CT 06106-5526.
- What is Chelsea Semrau's phone number?
- The practice phone number listed in the NPPES registry for Chelsea Semrau is (860) 972-4341.
- Does Chelsea Semrau accept Medicare?
- Chelsea Semrau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chelsea Semrau's NPI active?
- Yes — Chelsea Semrau's NPI (1699116582) is active in the NPPES registry as of the last update on 2022-08-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.