Gregory Chew
NPI 1407472103 · Addiction (Substance Use Disorder) Counselor · Baltimore, MD
Gregory Chew is a Addiction (Substance Use Disorder) Counselor provider in Baltimore, MD (NPI 1407472103).
Provider details
- NPI number
- 1407472103
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2020-06-19
- Last updated
- 2020-06-19
- Certified
- 2020-06-19
Frequently asked questions
- What is Gregory Chew's NPI number?
- Gregory Chew's National Provider Identifier (NPI) is 1407472103, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Chew's specialty?
- Gregory Chew is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Gregory Chew located?
- Gregory Chew's practice location on file with NPPES is 817 N Calvert St, Baltimore, MD 21202-3705.
- What is Gregory Chew's phone number?
- The practice phone number listed in the NPPES registry for Gregory Chew is (448) 290-6424.
- Is Gregory Chew's NPI active?
- Yes — Gregory Chew's NPI (1407472103) is active in the NPPES registry as of the last update on 2020-06-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.