DR. ANDREW MAYO M.D.
NPI 1598150393
Obstetrics & Gynecology in Saint Louis, MO

Q: What is Andrew Mayo's NPI number?

The NPI number for Andrew Mayo is 1598150393. It was assigned to this individual provider in the NPPES registry on March 30, 2015.

Q: What is Andrew Mayo's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for Andrew Mayo was last updated on July 13, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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 March 30, 2015PECOS EnrolledAccepts Medicare Assignment

621 S NEW BALLAS RD STE 1400, SAINT LOUIS, MO 63141(314) 251-7498(314) 251-4376 Get Directions Write a Review

NPPES record last updated: July 13, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 13, 2021, Nov 5, 2018 (2 updates tracked since 2018).

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About Dr. Andrew Mayo M.d. NPPES

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

DR. ANDREW MAYO M.D. (NPI 1598150393) is an individual obstetrics & gynecology provider in Saint Louis, Missouri, licensed in Missouri (2021016699) and active in the NPI registry since March 2015. He is enrolled in Medicare PECOS and is a graduate of Other (2013).

NPPES Registry Identity

NPI1598150393

Entity TypeIndividualMale

Primary Taxonomy207V00000X

Provider Legal NameDR. ANDREW MAYOCredential: M.D.

Location Address621 S NEW BALLAS RD STE 1400Saint Louis, MO 63141-8232

Mailing Address621 S New Ballas Rd Ste 1400Saint Louis, MO 63141-8232 · (314) 251-7498 · Fax (314) 251-4376

Phone(314) 251-7498

Fax(314) 251-4376

Sole ProprietorNo

Medical School CMSOtherGraduated 2013

Enumeration DateMarch 30, 2015

Last NPPES UpdateJuly 13, 20212 updates tracked since enumeration

NPPES CertifiedJuly 13, 2021

✔ NPI 1598150393 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

Licenses✔ Licensed in MO · 2021016699✔ Licensed in IL · 036.143820✔ Licensed in CA · A135348

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

621 S NEW BALLAS RD STE 1400, Saint Louis, MO 63141

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.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

Dr. Andrew Mayo M.d. 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 ID8224398490

PECOS Enrollment IDI20210607001254

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 Andrew Mayo reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mercy Hospitals East Communities

Same address

Audiologist

621 S NEW BALLAS RD STE 385A
Saint Louis, MO 63141

Reassigned Medicare billing, Missouri enrollment
Also billed through NPI 1851431738 (Missouri)
241 clinicians in this Medicare group

NPI 1255790762 (314) 251-5850

Mercy Womens Services LLC

Same address

Obstetrics & Gynecology

621 S NEW BALLAS RD
Saint Louis, MO 63141

Reassigned Medicare billing, Missouri enrollment
64 clinicians in this Medicare group

NPI 1629327788 (314) 251-6462

Mercy Clinic East Communities

Same address

Family Medicine

615 S NEW BALLAS RD, ADMINISTRATION BUILDING, 5TH FLOOR
Saint Louis, MO 63141

Reassigned Medicare billing, Missouri enrollment
744 clinicians in this Medicare group

NPI 1043574940 (314) 251-6000

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 63141 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

$128.28 typical visit price

range $55.65 – $169.38

Typical copayment $32.07 (range $13.91 – $42.34)

Most-billed visit code 99204

Established Patient

$69.50 typical visit price

range $17.76 – $137.92

Typical copayment $17.37 (range $4.44 – $34.48)

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.

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 Andrew Mayo's NPI number?

The NPI number for Andrew Mayo is 1598150393. It was assigned to this individual provider in the NPPES registry on March 30, 2015.

Where is Andrew Mayo located?

Andrew Mayo practices at 621 S New Ballas Rd Ste 1400, Saint Louis, MO 63141. The listed phone number is (314) 251-7498.

What is Andrew Mayo's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Andrew Mayo enrolled in Medicare?

Yes. Andrew Mayo 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 organizations bill Medicare for Andrew Mayo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Mayo reassigns Medicare benefits to 3 organizations: Mercy Hospitals East Communities (Saint Louis, MO), Mercy Womens Services LLC (Saint Louis, MO) and Mercy Clinic East Communities (Saint Louis, MO). 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 Andrew Mayo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Andrew Mayo accept?

Health plans from Anthem Blue Cross and Blue Shield list Andrew Mayo 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 Andrew Mayo was last updated on July 13, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.