IndividualActive
Karen Alderfer, M.S.
NPI 1235269341 · Psychologist · Lancaster, PA
Karen Alderfer, M.S. is a Psychologist provider in Lancaster, PA (NPI 1235269341).
Provider details
- NPI number
- 1235269341
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- M.S.
- Sex
- Female
- Sole proprietor
- Yes
- License
- PS - 006342 L (PA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(89/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
2938 Columbia Ave
#302
Lancaster, PA 17603-7000
Phone: (717) 390-7676
Fax: (717) 872-4253
Street-level locationGet directions
Mailing address
2938 Columbia Ave Ste 202
Lancaster, PA 17603-7011
Registry dates
- Enumerated
- 2007-03-07
- Last updated
- 2018-02-05
Frequently asked questions
- What is Karen Alderfer's NPI number?
- Karen Alderfer's National Provider Identifier (NPI) is 1235269341, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Alderfer's specialty?
- Karen Alderfer is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Karen Alderfer located?
- Karen Alderfer's practice location on file with NPPES is 2938 Columbia Ave, Lancaster, PA 17603-7000.
- What is Karen Alderfer's phone number?
- The practice phone number listed in the NPPES registry for Karen Alderfer is (717) 390-7676.
- Is Karen Alderfer's NPI active?
- Yes — Karen Alderfer's NPI (1235269341) is active in the NPPES registry as of the last update on 2018-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.