John Picken, M.D.
NPI 1831174317 · Obstetrics & Gynecology Physician · Chicago, IL
John Picken, M.D. is a Obstetrics & Gynecology Physician provider in Chicago, IL (NPI 1831174317).
Provider details
- NPI number
- 1831174317
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
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
20 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
- 2005-12-07
- Last updated
- 2007-09-10
Frequently asked questions
- What is John Picken's NPI number?
- John Picken's National Provider Identifier (NPI) is 1831174317, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Picken's specialty?
- John Picken is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is John Picken located?
- John Picken's practice location on file with NPPES is 2850 S Wabash Ave, Chicago, IL 60616-2955.
- What is John Picken's phone number?
- The practice phone number listed in the NPPES registry for John Picken is (312) 842-4400.
- Is John Picken's NPI active?
- Yes — John Picken's NPI (1831174317) is active in the NPPES registry as of the last update on 2007-09-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.