Cornerstone Internal Medicine
- Total HCPs
- 5
- Physicians (MD/DO)
- 2
- Nurses and PAs
- 3
- Parent org executives
- 3,293
- Practice locations
- 2
- Main site
- 1309 E Nolana Ave, Mcallen, TX 78504-6190
- Main phone
- (956) 618-0348
- Specialty areas
- Primary care
Parent organization
WellMed Medical Management
Brand and division of a system · San Antonio, Texas
Ultimate parent organization
UnitedHealth Group
Healthcare holding company · Eden Prairie, Minnesota
Find the right contacts among 3,293 executives and 5 HCPs
Professional emails, personal emails and mobile numbers for Cornerstone Internal Medicine's buying committee, with a free Dmand AI account.
Cornerstone Internal Medicine is a single-specialty medical group with 2 practice locations in Texas
Cornerstone Internal Medicine is based in Mcallen, Texas, part of UnitedHealth Group.
Sources: NPPES NPI Registry (CMS); Doctors and Clinicians National Downloadable File (CMS); Dmand AI Org Hierarchy Data; and Dmand AI Affiliation Data
Bryan Grundhoefer is president of WellMed Medical Management
Dmand AI tracks 3,293 executives and staff leaders at WellMed Medical Management. Waterfall enrichment finds their professional emails, personal emails and mobile numbers.
Executives by department
- Operations and administration534, names and contacts available with a free account
- Nursing497, names and contacts available with a free account
- Population Health, Value-Based Care and Care Management304, names and contacts available with a free account
- Ambulatory, Access and Patient Navigation281, names and contacts available with a free account
- Information technology257, names and contacts available with a free account
- Physicians and medical leadership246, names and contacts available with a free account
Get emails and mobile numbers for all 3,293 executives and leaders
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Source: Dmand AI Executive Data
Cornerstone Internal Medicine's NPI is 1437591260 and its PAC ID is 8325564784
- Primary NPI (Type 2)
- 1437591260NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8325564784
- Dmand ID
- NG-MGR-096455
- Medicare enrollment
- Enrolled (PAC ID on file)
- Main site address
- 1309 E Nolana Ave, Mcallen, TX 78504-6190
- Main phone
- (956) 618-0348
- Executive emails and mobiles
- Get contacts
- Group type
- Single-specialty
- Core specialty
- Primary care
- Site structure
- Multi-site
- Ownership model
- DSO / MSO
- Leadership
- Physician-led
- Medicare Part B payments
- $2.3M
- Legal name
- Cornerstone Internal Medicine PLLC
Sources: NPPES NPI Registry (CMS); Doctors and Clinicians National Downloadable File (CMS); Dmand AI Org Hierarchy Data; Dmand AI Organization Profile Data; and Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data
Cornerstone Internal Medicine is part of UnitedHealth Group
Dmand AI places Cornerstone Internal Medicine under WellMed Medical Management, a brand and division of a system, part of UnitedHealth Group.
- UnitedHealth Group
- Optum
- WellMed Medical Management
- Cornerstone Internal Medicine
- 344 other medical groups
344 other medical groups are part of WellMed Medical Management
Source: Dmand AI Org Hierarchy Data
Org hierarchy
See how Cornerstone Internal Medicine connects to UnitedHealth Group: its parent organizations, sister groups and every site of care in between, with the HCPs and leaders at each one.
Cornerstone Internal Medicine has 2 physicians among 5 HCPs
Cornerstone Internal Medicine physicians by specialty
- Family medicine2
Share of the group's 2 physicians.
Cornerstone Internal Medicine physicians
Sources: NPPES NPI Registry (CMS); Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Affiliation Data
Cornerstone Internal Medicine has 2 practice locations in Texas
Cornerstone Internal Medicine practice locations
Sources: Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Full footprint
Open all 2 practice locations with facility phones, patient visits and the HCPs at each site.
Cornerstone Internal Medicine is a primary care group
Primary care is Cornerstone Internal Medicine's core specialty, with family medicine as its main practice type.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Affiliation Data
Dmand AI tracks 1 EHR vendor at Cornerstone Internal Medicine
Vendor and product names for each practice location are available with a free account.
| Site | EHR vendor | Product |
|---|---|---|
| Main site | Available with a free account | Available with a free account |
| 1 other practice location | Available with a free account | Available with a free account |
Source: Dmand AI Technology Install Data
Primary care groups in Texas similar in size to Cornerstone Internal Medicine
These primary care groups have the closest number of HCPs to Cornerstone Internal Medicine.
| Medical group | HCPs |
|---|---|
| Adult Care of AustinAustin, TX | 5 |
| Airline Complete HealthcareHouston, TX | 5 |
| Airline Doctors Family And Pediatric ClinicHouston, TX | 5 |
| Alamo Primary CareSan Antonio, TX | 5 |
| Alemu Medical HomeNew Braunfels, TX | 5 |
Sources: Dmand AI Affiliation Data; and Dmand AI Peer Benchmarks
Sources for Cornerstone Internal Medicine data
| Data on this page | Source |
|---|---|
| NPI, PAC ID and address | NPPES NPI Registry (CMS) (opens in a new tab)Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Dmand ID, phone, website, LinkedIn and group profile | Dmand AI Org Hierarchy DataDmand AI Organization Profile Data |
| Medicare Part B payments | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| Parent organizations and sister groups | Dmand AI Org Hierarchy Data |
| HCPs and physician specialties | NPPES NPI Registry (CMS) (opens in a new tab)Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Affiliation Data |
| Specialty areas | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Affiliation Data |
| Practice locations and hospitals | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Executives and departments | Dmand AI Executive Data |
| EHR vendors | Dmand AI Technology Install Data |
| Similar groups | Dmand AI Affiliation DataDmand AI Peer Benchmarks |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Cornerstone Internal Medicine
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Cornerstone Internal Medicine's NPI number?
Cornerstone Internal Medicine's primary NPI (Type 2) is 1437591260.
What is Cornerstone Internal Medicine's PAC ID?
Cornerstone Internal Medicine's Medicare PAC ID is 8325564784, which means the group is enrolled in Medicare.
How many locations does Cornerstone Internal Medicine have?
Dmand AI links Cornerstone Internal Medicine to 2 practice locations in Texas. Its main site is at 1309 E Nolana Ave, Mcallen, TX 78504-6190.
What is Cornerstone Internal Medicine's phone number?
Cornerstone Internal Medicine's main phone number is (956) 618-0348.
Who owns Cornerstone Internal Medicine?
Dmand AI places Cornerstone Internal Medicine under WellMed Medical Management, a brand and division of a system, part of UnitedHealth Group.
How many physicians does Cornerstone Internal Medicine have?
Dmand AI links 2 physicians and 5 HCPs in all to Cornerstone Internal Medicine.
What specialties does Cornerstone Internal Medicine cover?
Cornerstone Internal Medicine is a primary care group. The largest physician specialties are family medicine (2).
Who leads Cornerstone Internal Medicine?
Dmand AI lists Bryan Grundhoefer as president at WellMed Medical Management.
How much does Cornerstone Internal Medicine receive from Medicare?
CMS data shows $2.3 million in Medicare Part B payments to Cornerstone Internal Medicine.
What other medical groups are part of WellMed Medical Management?
WellMed Medical Management has 344 other medical groups in Dmand AI, including WellMed Medical Management and WellMed Medical Group.
Selling to primary care groups?
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