What is Alexander Seger's NPI number?

Alexander Seger's National Provider Identifier (NPI) is 1457913279, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Alexander Seger's specialty?

Alexander Seger is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).

Where is Alexander Seger located?

Alexander Seger's practice location on file with NPPES is 400 N Pleasant Ave, Centralia, IL 62801-3056.

What is Alexander Seger's phone number?

The practice phone number listed in the NPPES registry for Alexander Seger is (618) 436-8000.

Does Alexander Seger accept Medicare?

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

Is Alexander Seger's NPI active?

Yes — Alexander Seger's NPI (1457913279) is active in the NPPES registry as of the last update on 2023-10-13.

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Alexander Seger, MD

NPI 1457913279 · Psychiatry Physician · Centralia, IL

Alexander Seger, MD is a Psychiatry Physician provider in Centralia, IL (NPI 1457913279).

Provider details

NPI number: 1457913279
Entity type: Individual
Primary specialty: Psychiatry PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 35426 (NE)

Practice location

400 N Pleasant Ave

Centralia, IL 62801-3056

Phone: (618) 436-8000

Street-level locationGet directions

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Mailing address

400 N Pleasant Ave

Centralia, IL 62801-3056

Specialties & taxonomies

Psychiatry PhysicianPrimary2084P0800XLicense 036.165127 (IL)
Allopathic & Osteopathic Physicians
Psychiatry Physician2084P0800XLicense 35426 (NE)
Allopathic & Osteopathic Physicians

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

Profile Score

Established profile(58/100 index)

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

Registry tenure28% of score
7 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
356 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 35 Minutes99232	271	$76
Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222	36	$127
Hospital Discharge Day Management, More Than 30 Minutes99239	36	$110
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233	13	$115

Typical Medicare-allowed amounts for these services range $76–$127 (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 · 3 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Trazodone Hcl	19	17
Hydroxyzine Hcl	12	12
Olanzapine	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 no Part D record, 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: 2019-07-01
Last updated: 2023-10-13
Certified: 2023-10-13

Frequently asked questions

What is Alexander Seger's NPI number?: Alexander Seger's National Provider Identifier (NPI) is 1457913279, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Alexander Seger's specialty?: Alexander Seger is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
Where is Alexander Seger located?: Alexander Seger's practice location on file with NPPES is 400 N Pleasant Ave, Centralia, IL 62801-3056.
What is Alexander Seger's phone number?: The practice phone number listed in the NPPES registry for Alexander Seger is (618) 436-8000.
Does Alexander Seger accept Medicare?: Alexander Seger is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Alexander Seger's NPI active?: Yes — Alexander Seger's NPI (1457913279) is active in the NPPES registry as of the last update on 2023-10-13.

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 35 Minutes99232	271	$76
Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222	36	$127
Hospital Discharge Day Management, More Than 30 Minutes99239	36	$110
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233	13	$115

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Trazodone Hcl	19	17
Hydroxyzine Hcl	12	12
Olanzapine	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)