DR. ALEXANDER MULLAN HARRISON MD
NPI 1639705635
Obstetrics & Gynecology - Maternal & Fetal Medicine in Lexington, KY

Q: What is Alexander Harrison's NPI number?

The NPI number for Alexander Harrison is 1639705635. It was assigned to this individual provider in the NPPES registry on March 21, 2020.

Q: What is Alexander Harrison's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

Active since March 21, 2020PECOS Enrolled

800 ROSE ST, LEXINGTON, KY 40536(859) 323-0005(859) 323-0790 Get Directions Write a Review

NPPES record last updated: June 17, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 17, 2025, Mar 21, 2020 (2 updates tracked since 2020).

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About Dr. Alexander Mullan Harrison Md NPPES

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

DR. ALEXANDER MULLAN HARRISON MD (NPI 1639705635) is an individual maternal & fetal medicine provider in Lexington, Kentucky, licensed in Kentucky (59380) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1639705635

Entity TypeIndividualMale

Primary Taxonomy207VM0101X

Provider Legal NameDR. ALEXANDER MULLAN HARRISONCredential: MD

Location Address800 ROSE STLexington, KY 40536-1900

Mailing Address800 Rose StLexington, KY 40536-7001 · (859) 323-0005 · Fax (859) 323-0790

Phone(859) 323-0005

Fax(859) 323-0790

Sole ProprietorYes

Enumeration DateMarch 21, 2020

Last NPPES UpdateJune 17, 20252 updates tracked since enumeration

NPPES CertifiedJune 17, 2025

✔ NPI 1639705635 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207VM0101X

License✔ Licensed in KY · 59380

Definition

An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.

800 ROSE ST, Lexington, KY 40536

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Alexander Mullan Harrison Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignments

Medicare enrollment records show Alexander Harrison reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Magdalene Karon, M.D., P.S.C.

4.2 mi

Obstetrics & Gynecology

160 N EAGLE CREEK DR STE 205
Lexington, KY 40509

Reassigned Medicare billing, Kentucky enrollment
17 clinicians in this Medicare group

NPI 1235324690 (859) 277-3135

Obhg Kentucky, P.S.C.

106 mi

Obstetrics & Gynecology

2201 LEXINGTON AVE
Ashland, KY 41101

Reassigned Medicare billing, Kentucky enrollment
Medicare enrollment name: Obhg Kentucky Psc
123 clinicians in this Medicare group

NPI 1457644122 (864) 908-3530

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 40536 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

$122.77 typical visit price

range $52.76 – $162.27

Typical copayment $30.69 (range $13.19 – $40.56)

Most-billed visit code 99204

Established Patient

$66.24 typical visit price

range $16.53 – $131.99

Typical copayment $16.56 (range $4.13 – $32.99)

Most-billed visit code 99213

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.

DR. JEREMY WAYNE THACKER M.D.

Radiology (Diagnostic Radiology)

800 ROSE ST, HX-302 UKMC
LEXINGTON, KY 40536

Fayette County (859) 257-4457

DR. KIRK PHILLIP HEITMAN M.D.

Pathology (Anatomic Pathology & Clinical Pathology)

800 ROSE ST, MS117
LEXINGTON, KY 40536

Fayette County (859) 257-1446

HARISH RAM MD

Anesthesiology

800 ROSE ST
LEXINGTON, KY 40536

Fayette County (859) 323-5956

MS. YVONNE P RICE APRN NP-C

Nurse Practitioner (Family)

800 ROSE ST
LEXINGTON, KY 40536

Fayette County (859) 218-1779

VANESSA D. SMITH MD

Pathology (Anatomic Pathology)

800 ROSE ST
LEXINGTON, KY 40536

Fayette County (859) 323-6183

JASMINE HOWARD APRN

Nurse Practitioner (Acute Care)

800 ROSE ST, MN604
LEXINGTON, KY 40536

Fayette County (859) 323-6047

MITCHELL ALEXANDER MIGUEL M.D.

Hospitalist

800 ROSE ST
LEXINGTON, KY 40536

Fayette County (859) 323-6047

LEAH RAY YEAGER APRN

Nurse Practitioner (Family)

800 ROSE ST, CC417
LEXINGTON, KY 40536

Fayette County (859) 257-1223

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 Alexander Harrison's NPI number?

The NPI number for Alexander Harrison is 1639705635. It was assigned to this individual provider in the NPPES registry on March 21, 2020.

Where is Alexander Harrison located?

Alexander Harrison practices at 800 Rose St, Lexington, KY 40536. The listed phone number is (859) 323-0005.

What is Alexander Harrison's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

Is Alexander Harrison enrolled in Medicare?

Yes. Alexander Harrison is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Alexander Harrison's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Harrison reassigns Medicare benefits to 2 organizations: Magdalene Karon, M.D., P.S.C. (Lexington, KY) and Obhg Kentucky, P.S.C. (Ashland, KY). Each 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 Alexander Harrison's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Alexander Harrison was last updated on June 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.