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DR. MARK EDWARD HENNESSY M.D.
NPI 1194784728
Internal Medicine in Houston, TX

Active since March 22, 2006PECOS Enrolled
14215 S POST OAK RD, HOUSTON, TX 77045(832) 541-8360 Get Directions Write a Review

NPPES record last updated: April 29, 2024. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 29, 2024, Nov 19, 2018 (2 updates tracked since 2018).

About Dr. Mark Edward Hennessy M.d. NPPES

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

DR. MARK EDWARD HENNESSY M.D. (NPI 1194784728) is an individual internal medicine provider in Houston, Texas, licensed in Texas (N4468) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Houston.

NPPES Registry Identity

NPI1194784728
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. MARK EDWARD HENNESSYCredential: M.D.
Location Address14215 S POST OAK RDHouston, TX 77045-5233
Mailing Address7515 Main St Ste 780Houston, TX 77030-4537 · (832) 955-1221 · Fax (832) 968-3580
Phone(832) 541-8360
Sole ProprietorYes
Enumeration DateMarch 22, 2006
Last NPPES UpdateApril 29, 20242 updates tracked since enumeration
NPPES CertifiedApril 29, 2024
✔ NPI 1194784728 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in TX · N4468✔ Licensed in NC · 9500093
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedFamily MedicineTaxonomy 207Q00000X · License N4468 (TX)
14215 S POST OAK RD, Houston, TX 77045
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Secondary Practice Location 1

Location 17515 Main St Ste 780Houston, TX 77030-4537 · Phone (832) 955-1221 · Fax (832) 968-3580

Other Identifiers 4

Other8CQ712TX · Bcbs
Other41696NC · Bcbs Provider Number
Other11323149TX · Uhc
Medicaid8941696NC

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mark Edward Hennessy M.d. 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 77045 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
$134.06 typical visit price
range $58.24 – $176.98
Typical copayment $33.51 (range $14.56 – $44.24)
Most-billed visit code 99204
Established Patient
$102.71 typical visit price
range $18.60 – $143.93
Typical copayment $25.67 (range $4.65 – $35.98)
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 7

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

ST THERESA HOSPICE LLC
Hospice Care, Community Based
14215 S POST OAK RD
HOUSTON, TX 77045
Harris County (713) 562-3195
E. CHINYERE NWANNA FNP- C
Nurse Practitioner (Family)
14215 S POST OAK RD
HOUSTON, TX 77045
Harris County (713) 433-4536
FOSTER BEHAVIORAL HEALTHCARE LLC
Registered Nurse (Administrator)
14215 S POST OAK RD
HOUSTON, TX 77045
Harris County (832) 661-3272
CAPU HEALTHCARE LLC
Hospice Care, Community Based
14215 S POST OAK RD
HOUSTON, TX 77045
Harris County (713) 562-3195
SPO FAMILY CARE MEDICAL CLINIC LLC
General Practice
14215 S POST OAK RD
HOUSTON, TX 77045
Harris County (713) 433-4536
VINESSEE HOSPICE LLC
Hospice Care, Community Based
14215 S POST OAK RD
HOUSTON, TX 77045
Harris County (713) 367-0064
ZAINE EMS LLC
Ambulance (Land Transport)
14215 S POST OAK RD
HOUSTON, TX 77045
Harris County (832) 466-4218

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 Mark Hennessy's NPI number?

The NPI number for Mark Hennessy is 1194784728. It was assigned to this individual provider in the NPPES registry on March 22, 2006.

Where is Mark Hennessy located?

Mark Hennessy practices at 14215 S Post Oak Rd, Houston, TX 77045. The listed phone number is (832) 541-8360.

What is Mark Hennessy's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mark Hennessy enrolled in Medicare?

Yes. Mark Hennessy is registered in the Medicare PECOS enrollment system.

What insurance does Mark Hennessy accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 4 other insurers list Mark Hennessy 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 Mark Hennessy was last updated on April 29, 2024. 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.