Cory Chen, MD
NPI 1851394548 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cory Chen, MD is a Internal Medicine Physician provider in Chicago, IL (NPI 1851394548).
Provider details
- NPI number
- 1851394548
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036095449 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
21 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
234 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 93 | $133 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 76 | $17 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 42 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 23 | $94 |
Typical Medicare-allowed amounts for these services range $9–$133 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 153 | 74 |
| Amlodipine Besylate | 81 | 43 |
| Metformin Hcl | 57 | 28 |
| Levothyroxine Sodium | 47 | 17 |
| Rosuvastatin Calcium | 39 | 16 |
| Metoprolol Succinate | 37 | 16 |
| Bupropion Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-05-27
- Last updated
- 2021-03-12
- Certified
- 2021-03-12
Frequently asked questions
- What is Cory Chen's NPI number?
- Cory Chen's National Provider Identifier (NPI) is 1851394548, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cory Chen's specialty?
- Cory Chen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cory Chen located?
- Cory Chen's practice location on file with NPPES is 4833 N Milwaukee Ave, Chicago, IL 60630-2145.
- What is Cory Chen's phone number?
- The practice phone number listed in the NPPES registry for Cory Chen is (773) 205-2857.
- Does Cory Chen accept Medicare?
- Cory Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cory Chen's NPI active?
- Yes — Cory Chen's NPI (1851394548) is active in the NPPES registry as of the last update on 2021-03-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.