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

ELIZABETH ABOU DIWAN MD
NPI 1154026300
Internal Medicine - Endocrinology, Diabetes & Metabolism in Saint Louis, MO

Active since April 04, 2023PECOS Enrolled
4921 PARKVIEW PL STE 13B, SAINT LOUIS, MO 63110(314) 362-3500 Get Directions Write a Review

NPPES record last updated: July 14, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 14, 2026, Apr 4, 2023 (2 updates tracked since 2023).

About Elizabeth Abou Diwan Md NPPES

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

ELIZABETH ABOU DIWAN MD (NPI 1154026300) is an individual endocrinology, diabetes & metabolism provider in Saint Louis, Missouri, licensed in Missouri (2026015468) and active in the NPI registry since April 2023. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1154026300
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameELIZABETH ABOU DIWANCredential: MD
Location Address4921 PARKVIEW PL STE 13BSaint Louis, MO 63110-1032
Mailing Address660 South Euclid Avenue, 8217-0021-05Saint Louis, MO 63110-1032 · (314) 362-3500
Phone(314) 362-3500
Sole ProprietorNo
Enumeration DateApril 4, 2023
Last NPPES UpdateJuly 14, 20262 updates tracked since enumeration
NPPES CertifiedJuly 14, 2026
✔ NPI 1154026300 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in MO · 2026015468
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
4921 PARKVIEW PL STE 13B, Saint Louis, MO 63110
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Elizabeth Abou Diwan 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63110 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
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
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 3

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

BINITA NEUPANE MD
Internal Medicine
4921 PARKVIEW PL STE 13B
SAINT LOUIS, MO 63110
St. Louis City (314) 362-3500
MS. PATRICIA G KNUTSEN AHCNS
Nurse Practitioner
4921 PARKVIEW PL STE 13B, STE 13B
SAINT LOUIS, MO 63110
St. Louis City (314) 747-7300
SOO-HYUN LEE
Internal Medicine
4921 PARKVIEW PL STE 13B
SAINT LOUIS, MO 63110
St. Louis City (314) 362-3500

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 Elizabeth Abou Diwan's NPI number?

The NPI number for Elizabeth Abou Diwan is 1154026300. It was assigned to this individual provider in the NPPES registry on April 4, 2023.

Where is Elizabeth Abou Diwan located?

Elizabeth Abou Diwan practices at 4921 Parkview Pl Ste 13B, Saint Louis, MO 63110. The listed phone number is (314) 362-3500.

What is Elizabeth Abou Diwan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Elizabeth Abou Diwan enrolled in Medicare?

Yes. Elizabeth Abou Diwan is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Elizabeth Abou Diwan was last updated on July 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 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.