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Robert Greenstein, L.AC.
NPI 1821053596 · Acupuncturist · Sonoma, CA
Robert Greenstein, L.AC. is a Acupuncturist provider in Sonoma, CA (NPI 1821053596).
Provider details
- NPI number
- 1821053596
- Entity type
- Individual
- Primary specialty
- AcupuncturistOther Service Providers
- Credential
- L.AC.
- Sex
- Male
- Sole proprietor
- Yes
- License
- AC3308 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
811 W Napa St
Suite R
Sonoma, CA 95476-6426
Phone: (707) 490-5972
Street-level locationGet directions
Mailing address
Po Box 86
El Verano, CA 95433-0086
Registry dates
- Enumerated
- 2006-04-18
- Last updated
- 2011-02-26
Frequently asked questions
- What is Robert Greenstein's NPI number?
- Robert Greenstein's National Provider Identifier (NPI) is 1821053596, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Greenstein's specialty?
- Robert Greenstein is listed in the NPPES registry with a primary specialty of Acupuncturist (Other Service Providers).
- Where is Robert Greenstein located?
- Robert Greenstein's practice location on file with NPPES is 811 W Napa St, Sonoma, CA 95476-6426.
- What is Robert Greenstein's phone number?
- The practice phone number listed in the NPPES registry for Robert Greenstein is (707) 490-5972.
- Is Robert Greenstein's NPI active?
- Yes — Robert Greenstein's NPI (1821053596) is active in the NPPES registry as of the last update on 2011-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.