Preston Jacob, M.D.
NPI 1790226900 · Emergency Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Preston Jacob, M.D. is a Emergency Medicine Physician provider in Chicago, IL (NPI 1790226900).
Provider details
- NPI number
- 1790226900
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 125.070476 (IL)
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 tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
208 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 128 | $184 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 45 | $126 |
| Critical Care, First 30-74 Minutes99291 | 24 | $222 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 11 | $76 |
Typical Medicare-allowed amounts for these services range $76–$222 (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.
Practice location
Mailing address
Additional practice locations (3)
- 1740 W Taylor StChicago, IL 60612-7232Phone: (866) 600-2273
- 2525 S Michigan AveChicago, IL 60616-2315Phone: (312) 567-2000
- 1775 Dempster StPark Ridge, IL 60068-1143Phone: (847) 723-2210
Registry dates
- Enumerated
- 2017-03-20
- Last updated
- 2025-08-04
- Certified
- 2025-08-04
Frequently asked questions
- What is Preston Jacob's NPI number?
- Preston Jacob's National Provider Identifier (NPI) is 1790226900, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Preston Jacob's specialty?
- Preston Jacob is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Preston Jacob located?
- Preston Jacob's practice location on file with NPPES is 836 W Wellington Ave, Chicago, IL 60657-5147.
- What is Preston Jacob's phone number?
- The practice phone number listed in the NPPES registry for Preston Jacob is (773) 975-1600.
- Does Preston Jacob accept Medicare?
- Preston Jacob is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Preston Jacob's NPI active?
- Yes — Preston Jacob's NPI (1790226900) is active in the NPPES registry as of the last update on 2025-08-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.