Alan Feren, M.D.
NPI 1508103227 · Specialist · Mill Valley, CA
Enrolled with Medicare as Order and Referring Only - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alan Feren, M.D. is a Specialist provider in Mill Valley, CA (NPI 1508103227).
Provider details
- NPI number
- 1508103227
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G24920 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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
- 2013-01-15
- Last updated
- 2013-01-15
Frequently asked questions
- What is Alan Feren's NPI number?
- Alan Feren's National Provider Identifier (NPI) is 1508103227, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alan Feren's specialty?
- Alan Feren is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Alan Feren located?
- Alan Feren's practice location on file with NPPES is 326 Sheffield Ave, Mill Valley, CA 94941-3860.
- What is Alan Feren's phone number?
- The practice phone number listed in the NPPES registry for Alan Feren is (415) 388-3131.
- Does Alan Feren accept Medicare?
- Alan Feren is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alan Feren's NPI active?
- Yes — Alan Feren's NPI (1508103227) is active in the NPPES registry as of the last update on 2013-01-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.