Mark Alvarado, MD
NPI 1821090663 · Addiction Psychiatry Physician · Brooklyn, NY
Mark Alvarado, MD is a Addiction Psychiatry Physician provider in Brooklyn, NY (NPI 1821090663).
Provider details
- NPI number
- 1821090663
- Entity type
- Individual
- Primary specialty
- Addiction Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA05668900 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2005-08-11
- Last updated
- 2011-06-06
Frequently asked questions
- What is Mark Alvarado's NPI number?
- Mark Alvarado's National Provider Identifier (NPI) is 1821090663, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Alvarado's specialty?
- Mark Alvarado is listed in the NPPES registry with a primary specialty of Addiction Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Alvarado located?
- Mark Alvarado's practice location on file with NPPES is 514 49th St, Brooklyn, NY 11220-2010.
- What is Mark Alvarado's phone number?
- The practice phone number listed in the NPPES registry for Mark Alvarado is (718) 437-5235.
- Is Mark Alvarado's NPI active?
- Yes — Mark Alvarado's NPI (1821090663) is active in the NPPES registry as of the last update on 2011-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.