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DR. MARY HAVEN MERKLE MD
NPI 1164406732
Internal Medicine in Houston, TX

Active since December 06, 2005PECOS Enrolled
710 FM 1960 WEST, HOUSTON, TX 77090(281) 440-2692(281) 440-2653 Get Directions Write a Review

NPPES record last updated: March 5, 2010. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Mary Haven Merkle Md NPPES

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

DR. MARY HAVEN MERKLE MD (NPI 1164406732) is an individual internal medicine provider in Houston, Texas, licensed in Texas (K0133) and active in the NPI registry since December 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1164406732
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. MARY HAVEN MERKLECredential: MD
Location Address710 FM 1960 WESTHouston, TX 77090-3402
Mailing Address4299 San Felipe, Suite 300Houston, TX 77027-2916 · (832) 476-3900 · Fax (832) 476-3900
Phone(281) 440-2692
Fax(281) 440-2653
Sole ProprietorNo
Enumeration DateDecember 6, 2005
Last NPPES UpdateMarch 5, 2010
✔ NPI 1164406732 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TX · K0133
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 ListedHospitalistTaxonomy 208M00000X · License K0133 (TX)
710 FM 1960 WEST, Houston, TX 77090
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Other Names 1

Other Name (5)Mary Haven Stallings Md

Other Identifiers 4

Medicare PIN8L24224TX
Medicare UPINF69345
Medicaid100338601TX
Medicare ID-Type Unspecified86252NTX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, BlueCross BlueShield of Tennessee.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mary Haven Merkle 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

5

Medicare enrollment records show Mary Haven Merkle reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Bh Services Southeast 1 PC
528 mi
Nurse Practitioner
2565 N WASHINGTON AVE
Brownsville, TN 38012
  • Reassigned Medicare billing, Tennessee enrollment
  • 129 clinicians in this Medicare group
NPI 1164251526 (731) 772-4199
Hospital Medicine Services Of Tennessee PC
868 mi
Hospitalist
600 WILSON CREEK RD
Lawrenceburg, IN 47025
  • Reassigned Medicare billing, Tennessee enrollment
  • 394 clinicians in this Medicare group
NPI 1528433802 (812) 537-1010
Ipc Pac Healthcare Services Of Tennessee PC
886 mi
Internal Medicine
1 MEDICAL PARK BLVD
Bristol, TN 37620
  • Reassigned Medicare billing, Tennessee enrollment
  • 230 clinicians in this Medicare group
NPI 1104277656 (423) 844-1121
Cs Pacs 3 Southeast, LLC
958 mi
Hospitalist
1600 BLAND ST
Bluefield, WV 24701
  • Reassigned Medicare billing, Tennessee enrollment
  • 227 clinicians in this Medicare group
NPI 1154104958 (304) 327-2485
Nv Pacs 2 LLC
1,226 mi
Hospitalist
10550 PARK RUN DR
Las Vegas, NV 89144
  • Reassigned Medicare billing, Tennessee enrollment
  • 253 clinicians in this Medicare group
NPI 1427534809 (865) 693-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
273 services106 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
59 services41 patients
Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more 99306
An initial nursing facility visit is your first meeting with your healthcare team at a nursing facility. Lasting typically 45 minutes, this appointment involves a comprehensive health assessment and the creation of your personalized care plan. It's a crucial step to ensure your health and well-being.
52 services45 patients
Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes 99305
An initial nursing facility visit per day is a service where a healthcare professional spends about 35 minutes assessing a patient's health status. This includes reviewing medical history, conducting a physical exam, and developing a care plan based on the patient's needs.
44 services39 patients
Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes 99305
An initial nursing facility visit per day is a service where a healthcare professional spends about 35 minutes assessing a patient's health status. This includes reviewing medical history, conducting a physical exam, and developing a care plan based on the patient's needs.
30 services27 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
25 services24 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77090 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 4

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

NEDIRA M ABDOWAISE PA
Physician Assistant
710 FM 1960 WEST
HOUSTON, TX 77090
Harris County (281) 440-2543
DR. SRILAKSHMI KONIDALA M.D.
Internal Medicine
710 FM 1960 WEST
HOUSTON, TX 77090
Harris County (281) 440-2692
NAYNA SHAH MD
Family Medicine
710 FM 1960 WEST
HOUSTON, TX 77090
Harris County (281) 440-2692
DR. CARLOS CHUA MD
Pediatrics (Neonatal-Perinatal Medicine)
710 FM 1960 WEST, SUITE 220
HOUSTON, TX 77090
Harris County (281) 440-2809

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 Mary Haven Merkle's NPI number?

The NPI number for Mary Haven Merkle is 1164406732. It was assigned to this individual provider in the NPPES registry on December 6, 2005. The provider is also known as Mary Haven Stallings MD.

Where is Mary Haven Merkle located?

Mary Haven Merkle practices at 710 Fm 1960 West, Houston, TX 77090. The listed phone number is (281) 440-2692.

What is Mary Haven Merkle's specialty?

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

Is Mary Haven Merkle enrolled in Medicare?

Yes. Mary Haven Merkle is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mary Haven Merkle's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Haven Merkle reassigns Medicare benefits to 5 organizations: Bh Services Southeast 1 PC (Brownsville, TN), Hospital Medicine Services Of Tennessee PC (Lawrenceburg, IN), Ipc Pac Healthcare Services Of Tennessee PC (Bristol, TN), Cs Pacs 3 Southeast, LLC (Bluefield, WV) and Nv Pacs 2 LLC (Las Vegas, NV). 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 Mary Haven Merkle's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mary Haven Merkle accept?

Health plans from Blue Cross and Blue Shield of Texas and BlueCross BlueShield of Tennessee list Mary Haven Merkle 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 Mary Haven Merkle was last updated on March 5, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.