Keith So, M.D.
NPI 1437218682 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Keith So, M.D. is a Internal Medicine Physician provider in Chicago, IL (NPI 1437218682).
Provider details
- NPI number
- 1437218682
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036-102425 (IL)
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
19 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 51 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 132 | 46 |
| Hydrochlorothiazide | 106 | 34 |
| Metformin Hcl | 99 | 29 |
| Amlodipine Besylate | 75 | 22 |
| Lisinopril | 48 | 17 |
| Losartan Potassium | 46 | 18 |
| Furosemide | 44 | 20 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-06
- Last updated
- 2016-02-16
Frequently asked questions
- What is Keith So's NPI number?
- Keith So's National Provider Identifier (NPI) is 1437218682, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Keith So's specialty?
- Keith So is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Keith So located?
- Keith So's practice location on file with NPPES is 3860 W Ogden Ave, Chicago, IL 60623-2460.
- What is Keith So's phone number?
- The practice phone number listed in the NPPES registry for Keith So is (872) 588-3000.
- Does Keith So accept Medicare?
- Keith So is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Keith So's NPI active?
- Yes — Keith So's NPI (1437218682) is active in the NPPES registry as of the last update on 2016-02-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.