Sarah Peifer, PMHNP-BC
NPI 1821440835 · Psychiatric/Mental Health Nurse Practitioner · South Weymouth, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sarah Peifer, PMHNP-BC is a Psychiatric/Mental Health Nurse Practitioner provider in South Weymouth, MA (NPI 1821440835).
Provider details
- NPI number
- 1821440835
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- RN2299580 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 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
133 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 48 | $153 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 27 | $73 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 24 | $68 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 22 | $105 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 12 | $44 |
Typical Medicare-allowed amounts for these services range $44–$153 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-07-01
- Last updated
- 2022-01-19
- Certified
- 2021-01-08
Frequently asked questions
- What is Sarah Peifer's NPI number?
- Sarah Peifer's National Provider Identifier (NPI) is 1821440835, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Peifer's specialty?
- Sarah Peifer is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sarah Peifer located?
- Sarah Peifer's practice location on file with NPPES is 55 Fogg Rd, South Weymouth, MA 02190-2432.
- What is Sarah Peifer's phone number?
- The practice phone number listed in the NPPES registry for Sarah Peifer is (781) 624-8000.
- Does Sarah Peifer accept Medicare?
- Sarah Peifer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sarah Peifer's NPI active?
- Yes — Sarah Peifer's NPI (1821440835) is active in the NPPES registry as of the last update on 2022-01-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.