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MICHAEL O'SULLIVAN MD
NPI 1811518848
Family Medicine in Mobile, AL

Active since April 30, 2020PECOS EnrolledAccepts Medicare Assignment
1700 SPRING HILL AVE, MOBILE, AL 36604(251) 435-1200(251) 435-6367 Get Directions Write a Review

NPPES record last updated: January 21, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 21, 2026, Aug 25, 2022 (2 updates tracked since 2022).

About Michael O'sullivan Md NPPES

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

MICHAEL O'SULLIVAN MD (NPI 1811518848) is an individual family medicine provider in Mobile, Alabama, licensed in Alabama (52746) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS and is a graduate of State University Of New York At Buffalo School Of Medicine (2020).

NPPES Registry Identity

NPI1811518848
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameMICHAEL O'SULLIVANCredential: MD
Location Address1700 SPRING HILL AVEMobile, AL 36604-1407
Mailing Address1700 Spring Hill AveMobile, AL 36604-1407 · (251) 435-1200 · Fax (251) 435-6367
Phone(251) 435-1200
Fax(251) 435-6367
Sole ProprietorNo
Medical School CMSState University Of New York At Buffalo School Of MedicineGraduated 2020
Enumeration DateApril 30, 2020
Last NPPES UpdateJanuary 21, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 21, 2026
✔ NPI 1811518848 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in AL · 52746
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1700 SPRING HILL AVE, Mobile, AL 36604
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Alabama, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Michael O'sullivan 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 ID2264853092
PECOS Enrollment IDI20251222001345
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.

Medicare Billing Reassignment

Medicare enrollment records show Michael O'sullivan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Imc-Diagnostic And Medical Clinic LLC
Same address
Internal Medicine
1700 SPRINGHILL AVE, SUITE 100
Mobile, AL 36604
  • Reassigned Medicare billing, Alabama enrollment
  • 210 clinicians in this Medicare group
NPI 1447201066 (251) 435-1200

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 36604 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
$81.90 typical visit price
range $52.65 – $161.63
Typical copayment $20.47 (range $13.16 – $40.40)
Most-billed visit code 99203
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.

DAMIAN JOSEPH COLLINS MD
Internal Medicine
1700 SPRING HILL AVE, SUITE 100
MOBILE, AL 36604
Mobile County (251) 435-1200
SAM ABDEHOU MD
Internal Medicine (Gastroenterology)
1700 SPRING HILL AVE
MOBILE, AL 36604
Mobile County (251) 435-1200
DR. DAREN A SCROGGIE M.D.
Internal Medicine (Rheumatology)
1700 SPRING HILL AVE, SUITE 100
MOBILE, AL 36604
Mobile County (251) 435-1200
DR. JACOB B WEBSTER M.D.
Internal Medicine
1700 SPRING HILL AVE, SUITE 100
MOBILE, AL 36604
Mobile County (251) 435-1200
JEFFREY D FAGGARD M.D
Internal Medicine (Rheumatology)
1700 SPRING HILL AVE, SUITE 100
MOBILE, AL 36604
Mobile County (251) 435-1200
MRS. CRYSTAL LEIGH DORRIETY CRNP
Nurse Practitioner (Family)
1700 SPRING HILL AVE, 100
MOBILE, AL 36604
Mobile County (251) 435-1200
SHANNON K HARRIS CRNP
Nurse Practitioner (Acute Care)
1700 SPRING HILL AVE, SUITE 100
MOBILE, AL 36604
Mobile County (251) 435-1200
DR. WILLIAM C HICKS III M.D
Internal Medicine
1700 SPRING HILL AVE, SUITE 100
MOBILE, AL 36604
Mobile County (251) 435-1200

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael O'sullivan's NPI number?

The NPI number for Michael O'sullivan is 1811518848. It was assigned to this individual provider in the NPPES registry on April 30, 2020.

Where is Michael O'sullivan located?

Michael O'sullivan practices at 1700 Spring Hill Ave, Mobile, AL 36604. The listed phone number is (251) 435-1200.

What is Michael O'sullivan's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Michael O'sullivan enrolled in Medicare?

Yes. Michael O'sullivan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Michael O'sullivan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael O'sullivan reassigns Medicare benefits to Imc-Diagnostic And Medical Clinic LLC (Mobile, AL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael O'sullivan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michael O'sullivan accept?

Health plans from Blue Cross and Blue Shield of Alabama and UnitedHealthcare list Michael O'sullivan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Michael O'sullivan was last updated on January 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.