DR. MICHAEL ALLEN TWYMAN MD
NPI 1053395533
Internal Medicine - Cardiovascular Disease in Saint Louis, MO

Q: What is Michael Twyman's NPI number?

The NPI number for Michael Twyman is 1053395533. It was assigned to this individual provider in the NPPES registry on November 30, 2005.

Q: What is Michael Twyman's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: Is Michael Twyman enrolled in Medicare?

No. Michael Twyman has opted out of Medicare through August 12, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

Q: When was this NPI record last updated?

The NPPES record for Michael Twyman was last updated on September 15, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 November 30, 2005Opted out of Medicare · through Aug 12, 2027

1034 S BRENTWOOD BLVD STE 1230, SAINT LOUIS, MO 63117(314) 635-9028(314) 293-6738 Get Directions Write a Review

NPPES record last updated: September 15, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Mar 30, 2020, Jul 25, 2019 (2 updates tracked since 2019).

On this page

About Dr. Michael Allen Twyman Md NPPES

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

DR. MICHAEL ALLEN TWYMAN MD (NPI 1053395533) is an individual cardiovascular disease provider in Saint Louis, Missouri, licensed in Missouri (2012009166) and active in the NPI registry since November 2005. He has opted out of Medicare through August 12, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1053395533

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. MICHAEL ALLEN TWYMANCredential: MD

Location Address1034 S BRENTWOOD BLVD STE 1230Saint Louis, MO 63117-1221

Mailing Address1034 S Brentwood Blvd Ste 1230Saint Louis, MO 63117-1221 · (314) 635-9028 · Fax (314) 293-6738

Phone(314) 635-9028

Fax(314) 293-6738

Sole ProprietorNo

Enumeration DateNovember 30, 2005

Last NPPES UpdateSeptember 15, 20232 updates tracked since enumeration

NPPES CertifiedSeptember 15, 2023

✔ NPI 1053395533 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in MO · 2012009166

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

1034 S BRENTWOOD BLVD STE 1230, Saint Louis, MO 63117

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Michael Allen Twyman Md has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from August 12, 2019 through August 12, 2027.

Opt-Out Effective DateAugust 12, 2019

Opt-Out In Effect ThroughAugust 12, 2027Opt-out affidavits renew automatically every two years unless cancelled

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63117 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

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

APOLLO CARDIOLOGY, LLC

Internal Medicine (Cardiovascular Disease)

1034 S BRENTWOOD BLVD STE 1230
SAINT LOUIS, MO 63117

St. Louis County (314) 635-9028

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 Twyman's NPI number?

The NPI number for Michael Twyman is 1053395533. It was assigned to this individual provider in the NPPES registry on November 30, 2005.

Where is Michael Twyman located?

Michael Twyman practices at 1034 S Brentwood Blvd Ste 1230, Saint Louis, MO 63117. The listed phone number is (314) 635-9028.

What is Michael Twyman's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Michael Twyman enrolled in Medicare?

No. Michael Twyman has opted out of Medicare through August 12, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Michael Twyman was last updated on September 15, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.