Sarah Somerfield, FNP-BC
NPI 1134378532 · Family Nurse Practitioner · West Branch, MI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sarah Somerfield, FNP-BC is a Family Nurse Practitioner provider in West Branch, MI (NPI 1134378532).
Provider details
- NPI number
- 1134378532
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- 4704216377 (MI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 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
338 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 Moderate Level of Medical Decision Making99284 | 150 | $100 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 136 | $145 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 52 | $59 |
Typical Medicare-allowed amounts for these services range $59–$145 (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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 44 | 44 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 34 | 34 |
| Methylprednisolone | 34 | 34 |
| Apixabanbrand: Eliquis | 30 | — |
| Ibuprofen | 24 | 24 |
| Ondansetronbrand: Ondansetron Odt | 21 | 21 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-09-10
- Last updated
- 2009-06-04
Frequently asked questions
- What is Sarah Somerfield's NPI number?
- Sarah Somerfield's National Provider Identifier (NPI) is 1134378532, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Somerfield's specialty?
- Sarah Somerfield is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sarah Somerfield located?
- Sarah Somerfield's practice location on file with NPPES is 611 Court St, West Branch, MI 48661-9390.
- What is Sarah Somerfield's phone number?
- The practice phone number listed in the NPPES registry for Sarah Somerfield is (989) 345-7000.
- Does Sarah Somerfield accept Medicare?
- Sarah Somerfield is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sarah Somerfield's NPI active?
- Yes — Sarah Somerfield's NPI (1134378532) is active in the NPPES registry as of the last update on 2009-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.