CARL PETER WALTHER M.D.
NPI 1356678684
Internal Medicine - Nephrology in Houston, TX

Active since November 06, 2009PECOS EnrolledAccepts Medicare Assignment
84.05/100
CMS Quality Rating
2525A HOLLY HALL ST, HOUSTON, TX 77054(713) 526-4243 Get Directions Write a Review

NPPES record last updated: April 4, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Carl Peter Walther M.d. NPPES

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

CARL PETER WALTHER M.D. (NPI 1356678684) is an individual nephrology provider in Houston, Texas, licensed in Texas (P2557) and active in the NPI registry since November 2009. He is enrolled in Medicare PECOS, is affiliated with Harris Health System, and maintains a secondary practice location in Houston.

NPPES Registry Identity

NPI1356678684
Entity TypeIndividualMale
Primary Taxonomy207RN0300X
Provider Legal NameCARL PETER WALTHERCredential: M.D.
Location Address2525A HOLLY HALL STHouston, TX 77054-4124
Mailing Address6620 Main St Ste 11b.38Houston, TX 77030-2348 · (713) 798-2500
Sole ProprietorNo
Medical School CMSBaylor College Of MedicineGraduated 2009
Enumeration DateNovember 6, 2009
Last NPPES UpdateApril 4, 2025
NPPES CertifiedApril 4, 2025
NPI 1356678684 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License Licensed in TX · P2557
Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

Also ListedInternal MedicineTaxonomy 207R00000X · License P2557 (TX)
2525A HOLLY HALL ST, Houston, TX 77054

Secondary Practice Location 1

Location 16431 Fannin St, Suite 5.134Houston, TX 77030-1501 · Phone (713) 500-6868 · Fax (713) 500-6882

Other Identifiers 1

Medicaid336291503TX

Accepted Insurance

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Carl Peter Walther M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5890919807
PECOS Enrollment IDI20140613000931
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.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Harris Health System

Acute Care Hospitals · Houston, TX
3/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number450289
Location2525 Holly HallHouston, TX 77054 · Harris County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77054 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

84.05/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality84.49
Improvement Activities40
Cost54.39

Other Providers at the Same Location NPPES 19

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

Pharmacist (Ambulatory Care)
2525A HOLLY HALL ST
HOUSTON, TX 77054
Pharmacist
2525A HOLLY HALL ST
HOUSTON, TX 77054
Pharmacist (Oncology)
2525A HOLLY HALL ST
HOUSTON, TX 77054
Dietitian, Registered
2525A HOLLY HALL ST
HOUSTON, TX 77054
Student in an Organized Health Care Education/Training Program
2525A HOLLY HALL ST
HOUSTON, TX 77054
Pharmacist (Ambulatory Care)
2525A HOLLY HALL ST
HOUSTON, TX 77054
Student in an Organized Health Care Education/Training Program
2525A HOLLY HALL ST
HOUSTON, TX 77054
Internal Medicine (Hematology & Oncology)
2525A HOLLY HALL ST
HOUSTON, TX 77054

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 Carl Walther's NPI number?

The NPI number for Carl Walther is 1356678684. It was assigned to this individual provider in the NPPES registry on November 6, 2009.

Where is Carl Walther located?

Carl Walther practices at 2525A Holly Hall St, Houston, TX 77054. The listed phone number is (713) 526-4243.

What is Carl Walther's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Carl Walther enrolled in Medicare?

Yes. Carl Walther is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Carl Walther accept?

Health plans from Blue Cross and Blue Shield of Texas, Community Health Choice, Molina Healthcare, UnitedHealthcare and WellPoint list Carl Walther 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.

Is Carl Walther affiliated with any hospitals?

According to CMS data, Carl Walther is affiliated with Harris Health System.

When was this NPI record last updated?

The NPPES record for Carl Walther was last updated on April 4, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.