What is Chong Pak's NPI number?

Chong Pak's National Provider Identifier (NPI) is 1003926296, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Chong Pak's specialty?

Chong Pak is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).

Where is Chong Pak located?

Chong Pak's practice location on file with NPPES is 800 W Central Rd, Arlington Heights, IL 60005-2349.

What is Chong Pak's phone number?

The practice phone number listed in the NPPES registry for Chong Pak is (847) 618-8400.

Does Chong Pak accept Medicare?

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

Is Chong Pak's NPI active?

Yes — Chong Pak's NPI (1003926296) is active in the NPPES registry as of the last update on 2021-05-10.

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Chong Pak, MD

NPI 1003926296 · Hospitalist Physician · Arlington Heights, IL

Chong Pak, MD is a Hospitalist Physician provider in Arlington Heights, IL (NPI 1003926296).

Provider details

NPI number: 1003926296
Entity type: Individual
Primary specialty: Hospitalist PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 036112526 (IL)

Practice location

800 W Central Rd

Arlington Heights, IL 60005-2349

Phone: (847) 618-8400

Fax: (847) 618-8409

Street-level locationGet directions

More IL providers

Mailing address

800 W Central Rd

Arlington Heights, IL 60005-2349

Specialties & taxonomies

Hospitalist PhysicianPrimary208M00000XLicense 036-112526 (IL)
Allopathic & Osteopathic Physicians
Internal Medicine Physician207R00000XLicense 036112526 (IL)
Allopathic & Osteopathic Physicians

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

Profile Score

Detailed profile(93/100 index)

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

Registry tenure28% of score
20 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
1,089 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)
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233	487	$122
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	266	$81
Hospital Discharge Day Management, More Than 30 Minutes99239	179	$117
Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223	126	$178
Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222	31	$130

Typical Medicare-allowed amounts for these services range $81–$178 (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 · 5 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Furosemide	15	15
Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen	15	15
Amlodipine Besylate	11	11
Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass	11	11
Prednisone	11	11

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Enumerated: 2006-08-30
Last updated: 2021-05-10
Certified: 2021-05-10

Frequently asked questions

What is Chong Pak's NPI number?: Chong Pak's National Provider Identifier (NPI) is 1003926296, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Chong Pak's specialty?: Chong Pak is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
Where is Chong Pak located?: Chong Pak's practice location on file with NPPES is 800 W Central Rd, Arlington Heights, IL 60005-2349.
What is Chong Pak's phone number?: The practice phone number listed in the NPPES registry for Chong Pak is (847) 618-8400.
Does Chong Pak accept Medicare?: Chong Pak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Chong Pak's NPI active?: Yes — Chong Pak's NPI (1003926296) is active in the NPPES registry as of the last update on 2021-05-10.

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)
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233	487	$122
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	266	$81
Hospital Discharge Day Management, More Than 30 Minutes99239	179	$117
Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223	126	$178
Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222	31	$130

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Furosemide	15	15
Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen	15	15
Amlodipine Besylate	11	11
Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass	11	11
Prednisone	11	11

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)