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DDRG PHYSICIANS LLC
NPI 1770939886
Internal Medicine in Tomball, TX

Active since May 07, 2016
605 HOLDERRIETH BLVD, TOMBALL, TX 77375(832) 687-5787 Get Directions Write a Review

NPPES record last updated: August 28, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Ddrg Physicians Llc NPPES

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

DDRG PHYSICIANS LLC (NPI 1770939886) is a healthcare organization registered as an internal medicine in Tomball, Texas and active in the NPI registry since May 2016. The organization lists Harold David Wills, President, as its authorized official.

NPPES Registry Identity

NPI1770939886
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameDDRG PHYSICIANS LLC
Location Address605 HOLDERRIETH BLVDTomball, TX 77375-6445
Mailing Address18 Cape Jasmine PlThe Woodlands, TX 77381-6459 · (832) 794-0044
Phone(832) 687-5787
Organization SubpartNo
Authorized OfficialHarold David WillsPresident · (832) 687-5787
Enumeration DateMay 7, 2016
Last NPPES UpdateAugust 28, 2021
NPPES CertifiedAugust 28, 2021
✔ NPI 1770939886 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
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
605 HOLDERRIETH BLVD, Tomball, TX 77375
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Other Identifiers 1

Other1932162252TX · Individual Npi

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Molina Healthcare, WellPoint.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ddrg Physicians Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Ddrg Physicians LLC, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 3 within 10 miles. They are listed nearest first.

Clinicians, nearest first (4)

Harold Wills, MD
Internal Medicine
NPI 1932162252
605 HOLDERRIETH BLVD
Tomball, TX 77375
(832) 687-5787
✔ PECOS✔ Accepts MedicareSame address
Cassie Xu, M.D.
Internal Medicine
NPI 1770947509
605 HOLDERRIETH BLVD
Tomball, TX 77375
(832) 794-0044
✔ PECOS✔ Accepts MedicareSame address
Maria Ella Valbuena, NP-C
Nurse Practitioner
NPI 1235628686
22603 WINDBOURNE DR
Tomball, TX 77375
(832) 620-8699
✔ PECOS3.6 mi
Sirisha Parvataneni, M.D.
Hospitalist
NPI 1326206822
11297 FALLBROOK DR
Houston, TX 77065
(409) 767-8600
✔ PECOS✔ Accepts Medicare11 mi

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

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 Ddrg Physicians LLC's NPI number?

The NPI number for Ddrg Physicians LLC is 1770939886. It was assigned to this organization in the NPPES registry on May 7, 2016.

Where is Ddrg Physicians LLC located?

Ddrg Physicians LLC is located at 605 Holderrieth Blvd, Tomball, TX 77375. The listed phone number is (832) 687-5787.

What is Ddrg Physicians LLC's specialty?

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

Is Ddrg Physicians LLC enrolled in Medicare?

Yes. Ddrg Physicians LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ddrg Physicians LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians reassign their Medicare billing to Ddrg Physicians LLC, in Hospitalist, Internal Medicine and Nurse Practitioner. A 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 the clinician's services. Of these, 2 practice at this address and 3 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Ddrg Physicians LLC accept?

Health plans from Molina Healthcare and WellPoint list Ddrg Physicians LLC 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 Ddrg Physicians LLC was last updated on August 28, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.