What is A. Mathew's NPI number?

A. Mathew's National Provider Identifier (NPI) is 1992817191, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is A. Mathew's specialty?

A. Mathew is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).

Where is A. Mathew located?

A. Mathew's practice location on file with NPPES is 4177 S Archer Ave, Chicago, IL 60632-1849.

What is A. Mathew's phone number?

The practice phone number listed in the NPPES registry for A. Mathew is (773) 254-2222.

Does A. Mathew accept Medicare?

A. Mathew is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is A. Mathew's NPI active?

Yes — A. Mathew's NPI (1992817191) is active in the NPPES registry as of the last update on 2025-01-27.

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A. Mathew, M.D.

NPI 1992817191 · Endocrinology, Diabetes & Metabolism Physician · Chicago, IL

A. Mathew, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Chicago, IL (NPI 1992817191).

Provider details

NPI number: 1992817191
Entity type: Individual
Primary specialty: Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: Yes
License: 036050312 (IL)

Practice location

4177 S Archer Ave

Chicago, IL 60632-1849

Phone: (773) 254-2222

Fax: (773) 254-8444

Street-level locationGet directions

More IL providers

Mailing address

Po Box 3663

Oak Brook, IL 60522-3663

Specialties & taxonomies

Endocrinology, Diabetes & Metabolism PhysicianPrimary207RE0101XLicense 036050312 (IL)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(73/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
20 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
1 documented practice location
Medicare service volume (vs. specialty peers)25% of score
378 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

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	153	$132
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	153	$81
Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223	39	$178
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	18	$94
New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205	15	$230

Typical Medicare-allowed amounts for these services range $81–$230 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 59 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Metoprolol Succinate	70	12
Levothyroxine Sodium	66	20
Losartan Potassium	63	11
Amlodipine Besylate	59	—
Potassium Chloride	58	—
Metformin Hcl	47	18
Atorvastatin Calcium

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$137 across 6 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2006-08-31
Last updated: 2025-01-27
Certified: 2025-01-27

Frequently asked questions

What is A. Mathew's NPI number?: A. Mathew's National Provider Identifier (NPI) is 1992817191, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is A. Mathew's specialty?: A. Mathew is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
Where is A. Mathew located?: A. Mathew's practice location on file with NPPES is 4177 S Archer Ave, Chicago, IL 60632-1849.
What is A. Mathew's phone number?: The practice phone number listed in the NPPES registry for A. Mathew is (773) 254-2222.
Does A. Mathew accept Medicare?: A. Mathew is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is A. Mathew's NPI active?: Yes — A. Mathew's NPI (1992817191) is active in the NPPES registry as of the last update on 2025-01-27.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

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	153	$132
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	153	$81
Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223	39	$178
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	18	$94
New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205	15	$230