DR. AILEEN PORTUGAL MD
NPI 1821559113
Obstetrics & Gynecology in Saint Louis, MO

Q: What is Aileen Portugal's NPI number?

The NPI number for Aileen Portugal is 1821559113. It was assigned to this individual provider in the NPPES registry on March 28, 2019.

Q: What is Aileen Portugal'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 Aileen Portugal was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since March 28, 2019PECOS Enrolled

4444 FOREST PARK AVE, DIV OB REPRODUCTIVE ENDOCRINOLOGY, STE 3100, SAINT LOUIS, MO 63108(314) 286-2400(314) 286-2455 Get Directions Write a Review

NPPES record last updated: April 17, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 25, 2024, Apr 10, 2024, Aug 8, 2023 and 1 more (4 updates tracked since 2021).

On this page

About Dr. Aileen Portugal Md NPPES

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

DR. AILEEN PORTUGAL MD (NPI 1821559113) is an individual obstetrics & gynecology provider in Saint Louis, Missouri, licensed in Missouri (2023025245) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1821559113

Entity TypeIndividualFemale

Primary Taxonomy207V00000X

Provider Legal NameDR. AILEEN PORTUGALCredential: MD

Location Address4444 FOREST PARK AVE, DIV OB REPRODUCTIVE ENDOCRINOLOGY, STE 3100Saint Louis, MO 63108-2212

Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 286-2400 · Fax (314) 286-2455

Phone(314) 286-2400

Fax(314) 286-2455

Sole ProprietorNo

Enumeration DateMarch 28, 2019

Last NPPES UpdateApril 17, 20254 updates tracked since enumeration

NPPES CertifiedJanuary 26, 2021

✔ NPI 1821559113 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in MO · 2023025245

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.

4444 FOREST PARK AVE, Saint Louis, MO 63108

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Other Identifiers 1

Medicaid200125703MO

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Aileen Portugal 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 Aileen Portugal reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Washington University

0.4 mi

Multi-Specialty

660 S EUCLID AVE
Saint Louis, MO 63110

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

NPI 1760422265 (314) 362-4964

Missouri Baptist Medical Center

10 mi

General Practice

3015 N BALLAS RD
Saint Louis, MO 63131

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

NPI 1467461434 (314) 996-5000

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 63108 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.

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. PATRICIA TEREESE JIMENEZ MD

Obstetrics & Gynecology (Reproductive Endocrinology)

4444 FOREST PARK AVE, DIV OB REPRODUCTIVE ENDOCRINOLOGY, STE 3100
SAINT LOUIS, MO 63108

St. Louis City (314) 286-2400

DR. DANIELLE BUCHANAN IVIE DPT

Physical Therapist

4444 FOREST PARK AVE, STE 1210
SAINT LOUIS, MO 63108

St. Louis City (314) 286-1940

MS. MARY GRACE PORTELL LPC

Counselor (Professional)

4444 FOREST PARK AVE, STE 2600
SAINT LOUIS, MO 63108

St. Louis City (314) 286-1700

MRS. PATRICIA K NELLIS OT

Occupational Therapist

4444 FOREST PARK AVE, DEPT OCCUPATIONAL THERAPY, STE 2210
SAINT LOUIS, MO 63108

St. Louis City (314) 286-1669

DR. KELLY N BOTTERON MD

Psychiatry & Neurology (Child & Adolescent Psychiatry)

4444 FOREST PARK AVE, STE 2600
SAINT LOUIS, MO 63108

St. Louis City (314) 286-1700

DR. ROBERT P FUCETOLA PHD

Clinical Neuropsychologist

4444 FOREST PARK AVE, DIV NEUROPSYCHOLOGY, 2ND FL
SAINT LOUIS, MO 63108

St. Louis City (314) 362-1408

MS. CHERYL L KLOHR MS OT

Occupational Therapist

4444 FOREST PARK AVE
SAINT LOUIS, MO 63108

St. Louis City (314) 362-5079

MS. BRIDGET O OCHUKO DPT

Physical Therapist

4444 FOREST PARK AVE, STE 1210
SAINT LOUIS, MO 63108

St. Louis City (314) 286-1940

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 Aileen Portugal's NPI number?

The NPI number for Aileen Portugal is 1821559113. It was assigned to this individual provider in the NPPES registry on March 28, 2019.

Where is Aileen Portugal located?

Aileen Portugal practices at 4444 Forest Park Ave Div Ob Reproductive Endocrinology, Ste 3100, Saint Louis, MO 63108. The listed phone number is (314) 286-2400.

What is Aileen Portugal's specialty?

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

Is Aileen Portugal enrolled in Medicare?

Yes. Aileen Portugal is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Aileen Portugal's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aileen Portugal reassigns Medicare benefits to 2 organizations: Washington University (Saint Louis, MO) and Missouri Baptist Medical Center (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 Aileen Portugal'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 Aileen Portugal was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.