Maryellen Pfeiffer, D.O.
NPI 1609076165 · Internal Medicine Physician · York, PA
Enrolled with Medicare as Practitioner - Osteopathic Manipulative Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maryellen Pfeiffer, D.O. is a Internal Medicine Physician provider in York, PA (NPI 1609076165).
Provider details
- NPI number
- 1609076165
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- OS013949 (PA)
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 tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-07-23
- Last updated
- 2020-02-03
- Certified
- 2020-02-03
Frequently asked questions
- What is Maryellen Pfeiffer's NPI number?
- Maryellen Pfeiffer's National Provider Identifier (NPI) is 1609076165, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maryellen Pfeiffer's specialty?
- Maryellen Pfeiffer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Maryellen Pfeiffer located?
- Maryellen Pfeiffer's practice location on file with NPPES is 1001 S George St, York, PA 17403-3676.
- What is Maryellen Pfeiffer's phone number?
- The practice phone number listed in the NPPES registry for Maryellen Pfeiffer is (717) 851-4005.
- Does Maryellen Pfeiffer accept Medicare?
- Maryellen Pfeiffer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maryellen Pfeiffer's NPI active?
- Yes — Maryellen Pfeiffer's NPI (1609076165) is active in the NPPES registry as of the last update on 2020-02-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.