Melissa Witaschek, N.P.
NPI 1609951391 · Nurse Practitioner · Hayward, CA
Melissa Witaschek, N.P. is a Nurse Practitioner provider in Hayward, CA (NPI 1609951391).
Provider details
- NPI number
- 1609951391
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- N.P.
- Sex
- Female
- Sole proprietor
- No
- License
- NPF11554 (CA)
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
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
Mailing address
Registry dates
- Enumerated
- 2006-10-25
- Last updated
- 2021-12-30
Frequently asked questions
- What is Melissa Witaschek's NPI number?
- Melissa Witaschek's National Provider Identifier (NPI) is 1609951391, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Witaschek's specialty?
- Melissa Witaschek is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Melissa Witaschek located?
- Melissa Witaschek's practice location on file with NPPES is 27303 Sleepy Hollow Ave S, Hayward, CA 94545-4203.
- What is Melissa Witaschek's phone number?
- The practice phone number listed in the NPPES registry for Melissa Witaschek is (510) 454-1000.
- Is Melissa Witaschek's NPI active?
- Yes — Melissa Witaschek's NPI (1609951391) is active in the NPPES registry as of the last update on 2021-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.