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Holly Erwin, PH.D.
NPI 1215940648 · Clinical Psychologist · Manassas, VA
Holly Erwin, PH.D. is a Clinical Psychologist provider in Manassas, VA (NPI 1215940648).
Provider details
- NPI number
- 1215940648
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 0810003271 (VA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 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
9625 Surveyor Ct Ste 200
Manassas, VA 20110-4408
Phone: (703) 330-9933
Fax: (703) 368-8454
Street-level locationGet directions
Mailing address
9625 Surveyor Ct Ste 200
Manassas, VA 20110-4408
Registry dates
- Enumerated
- 2006-08-15
- Last updated
- 2007-07-09
Frequently asked questions
- What is Holly Erwin's NPI number?
- Holly Erwin's National Provider Identifier (NPI) is 1215940648, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Holly Erwin's specialty?
- Holly Erwin is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Holly Erwin located?
- Holly Erwin's practice location on file with NPPES is 9625 Surveyor Ct Ste 200, Manassas, VA 20110-4408.
- What is Holly Erwin's phone number?
- The practice phone number listed in the NPPES registry for Holly Erwin is (703) 330-9933.
- Is Holly Erwin's NPI active?
- Yes — Holly Erwin's NPI (1215940648) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.