Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

WILLIAM MICHAEL GEISLER MD
NPI 1740224989
Internal Medicine - Infectious Disease in Birmingham, AL

Q: What is William Geisler's NPI number?

The NPI number for William Geisler is 1740224989. It was assigned to this individual provider in the NPPES registry on June 16, 2006.

Q: What is William Geisler's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Q: When was this NPI record last updated?

The NPPES record for William Geisler was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 16, 2006PECOS Enrolled

619 19TH STREET SOUTH, BIRMINGHAM, AL 35233(205) 934-6600 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About William Michael Geisler Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM MICHAEL GEISLER MD (NPI 1740224989) is an individual infectious disease provider in Birmingham, Alabama, licensed in Alabama (24652) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Birmingham, and is a graduate of University Of Tennessee, Hsc, College Of Medicine (1996).

NPPES Registry Identity

NPI1740224989

Entity TypeIndividualMale

Primary Taxonomy207RI0200X

Provider Legal NameWILLIAM MICHAEL GEISLERCredential: MD

Location Address619 19TH STREET SOUTHBirmingham, AL 35233

Mailing AddressPo Box 55310Birmingham, AL 35255-5310 · (205) 731-9701

Phone(205) 934-6600

Sole ProprietorNo

Medical School CMSUniversity Of Tennessee, Hsc, College Of MedicineGraduated 1996

Enumeration DateJune 16, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1740224989 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RI0200X

License✔ Licensed in AL · 24652

Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

619 19TH STREET SOUTH, Birmingham, AL 35233

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Secondary Practice Location 1

Location 1619 19th St SBirmingham, AL 35233-1900 · Phone (205) 934-5191

Other Identifiers 9

Medicaid009930735AL

Other051510731AL · Blue Cross

Other051510730AL · Blue Cross

Other051517271AL · Blue Cross

Other440003855AL · Railroad Medicare

Medicaid009903795AL

Other051511453AL · Blue Cross

Medicaid051551994AL

Medicaid009997030AL

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William Michael Geisler Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8628241866

PECOS Enrollment IDI20111102000862

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

34 services15 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 35233 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$122.31 typical visit price

range $52.65 – $161.63

Typical copayment $30.57 (range $13.16 – $40.40)

Most-billed visit code 99204

Established Patient

$93.72 typical visit price

range $16.56 – $131.65

Typical copayment $23.43 (range $4.14 – $32.91)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

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