Karlyn Young, MD
NPI 1629394598 · Internal Medicine Physician · Santa Rosa, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karlyn Young, MD is a Internal Medicine Physician provider in Santa Rosa, CA (NPI 1629394598).
Provider details
- NPI number
- 1629394598
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A121672 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 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
- 2010-04-15
- Last updated
- 2021-12-15
Frequently asked questions
- What is Karlyn Young's NPI number?
- Karlyn Young's National Provider Identifier (NPI) is 1629394598, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karlyn Young's specialty?
- Karlyn Young is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karlyn Young located?
- Karlyn Young's practice location on file with NPPES is 401 Bicentennial Way, Santa Rosa, CA 95403-2149.
- What is Karlyn Young's phone number?
- The practice phone number listed in the NPPES registry for Karlyn Young is (707) 393-4000.
- Does Karlyn Young accept Medicare?
- Karlyn Young is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karlyn Young's NPI active?
- Yes — Karlyn Young's NPI (1629394598) is active in the NPPES registry as of the last update on 2021-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.