Karen Neiderer, PA-C
NPI 1447790308 · Physician Assistant · Baltimore, MD
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Neiderer, PA-C is a Physician Assistant provider in Baltimore, MD (NPI 1447790308).
Provider details
- NPI number
- 1447790308
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- C0006397 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rivaroxabanbrand: Xarelto | 29 | — |
| Oxycodone Hcl | 21 | 13 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 19 | — |
| Atorvastatin Calcium | 17 | — |
| Apixabanbrand: Eliquis | 15 | — |
| Gabapentin | 13 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-02-27
- Last updated
- 2025-02-18
- Certified
- 2025-02-18
Frequently asked questions
- What is Karen Neiderer's NPI number?
- Karen Neiderer's National Provider Identifier (NPI) is 1447790308, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Neiderer's specialty?
- Karen Neiderer is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Neiderer located?
- Karen Neiderer's practice location on file with NPPES is 1800 Orleans St, Baltimore, MD 21287-0010.
- What is Karen Neiderer's phone number?
- The practice phone number listed in the NPPES registry for Karen Neiderer is (410) 504-9540.
- Does Karen Neiderer accept Medicare?
- Karen Neiderer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Neiderer's NPI active?
- Yes — Karen Neiderer's NPI (1447790308) is active in the NPPES registry as of the last update on 2025-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.