What is Aaron Klein's NPI number?

Aaron Klein's National Provider Identifier (NPI) is 1467623082, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Aaron Klein's specialty?

Aaron Klein is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).

Where is Aaron Klein located?

Aaron Klein's practice location on file with NPPES is 1 Good Samaritan Way, Mount Vernon, IL 62864-2402.

What is Aaron Klein's phone number?

The practice phone number listed in the NPPES registry for Aaron Klein is (618) 899-1994.

Does Aaron Klein accept Medicare?

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

Is Aaron Klein's NPI active?

Yes — Aaron Klein's NPI (1467623082) is active in the NPPES registry as of the last update on 2014-01-02.

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Aaron Klein, M.D.

NPI 1467623082 · Anatomic Pathology & Clinical Pathology Physician · Mount Vernon, IL

Aaron Klein, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Mount Vernon, IL (NPI 1467623082).

Provider details

NPI number: 1467623082
Entity type: Individual
Primary specialty: Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: 036133987 (IL)

Practice location

1 Good Samaritan Way

Department of Pathology

Mount Vernon, IL 62864-2402

Phone: (618) 899-1994

Street-level locationGet directions

More IL providers

Mailing address

1 Good Samaritan Way

Mount Vernon, IL 62864-2402

Specialties & taxonomies

Anatomic Pathology & Clinical Pathology PhysicianPrimary207ZP0102XLicense 036133987 (IL)
Allopathic & Osteopathic Physicians

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

Profile Score

Detailed profile(81/100 index)

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

Registry tenure28% of score
18 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
2,663 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)
Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305	2,646	$34
Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342	17	$32

Typical Medicare-allowed amounts for these services range $32–$34 (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.

Enumerated: 2008-03-23
Last updated: 2014-01-02

Frequently asked questions

What is Aaron Klein's NPI number?: Aaron Klein's National Provider Identifier (NPI) is 1467623082, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Aaron Klein's specialty?: Aaron Klein is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
Where is Aaron Klein located?: Aaron Klein's practice location on file with NPPES is 1 Good Samaritan Way, Mount Vernon, IL 62864-2402.
What is Aaron Klein's phone number?: The practice phone number listed in the NPPES registry for Aaron Klein is (618) 899-1994.
Does Aaron Klein accept Medicare?: Aaron Klein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Aaron Klein's NPI active?: Yes — Aaron Klein's NPI (1467623082) is active in the NPPES registry as of the last update on 2014-01-02.

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

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)