Martha L. Flagg, NP
- Medicare patients, 2024
- 61
- Part D claims, 2024
- 365
- Hospital affiliations
- 2
- Industry payments
- $24
- Medical groups
- 2
- Practice address
- 551 Hill Country Drive, Kerrville, TX 78028
- Practice phone
- Call (830) 896-4200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Martha Flagg's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Martha L. Flagg is an acute care nurse practitioner in Kerrville, Texas
Martha Flagg practices at Peterson Regional Medical Center in Kerrville, Texas, part of Peterson Health.
Martha Flagg's NPI, 1689908832, was assigned on September 21, 2009. Martha Flagg holds Texas license AP118220.
- NPI
- 1689908832NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7517006067
- NPI enumeration date
- September 21, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (830) 896-4200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Martha L. Flagg practices at Peterson Regional Medical Center in Kerrville, Texas
Martha Flagg's primary practice is Peterson Regional Medical Center, at 551 Hill Country Drive, Kerrville, TX 78028 in Kerr County. The practice phone is (830) 896-4200.
- Peterson Regional Medical Center551 Hill Country Drive, Kerrville, TX 78028 · Kerr CountyPhone(830) 896-4200
Source: Dmand AI Affiliation Data
Martha L. Flagg is affiliated with 4 sites of care and 2 medical groups
Martha Flagg's primary practice is Peterson Regional Medical Center in Kerrville, Texas, part of Peterson Health. The medical group on file is US Acute Care Solutions. Dmand AI also links Martha Flagg to 1 more hospital, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Martha L. Flagg's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Martha Flagg practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Peterson Regional Medical Center | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Peterson Health and 6.2K+ hospitals, with verified contacts in the same login.
Martha L. Flagg is one of 2,587 acute care nurse practitioners in Texas
Acute care is Martha Flagg's primary specialty in the NPI Registry, under taxonomy code 363LA2100X. Martha Flagg is licensed in Texas.
Specialties and state licenses
- Acute care nurse practitioner, TexasPrimary
Acute care nurse practitioners near Martha Flagg
Counts of acute care nurse practitioners with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Martha L. Flagg treated 61 Medicare patients in 2024, average age 78
CMS counts 61 Medicare patients who saw Martha Flagg in 2024. The largest group is 65 to 74, with 24 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.37, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Martha Flagg's median patient age at 73, with 52% women.
Martha Flagg's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Martha Flagg's Medicare patients by sex, 2024
- Women3252%
- Men2948%
Chronic conditions among Martha Flagg's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease46%
- Diabetes44%
- Arthritis41%
- Mood disorders38%
- Depression34%
- Anxiety30%
Share of Medicare patients with each condition. A patient can have several.
Martha Flagg's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Martha L. Flagg wrote 365 Medicare Part D claims in 2024
In 2024, Martha Flagg wrote 365 Medicare Part D claims for 175 patients. 93% of them were for generic drugs.
Martha Flagg's Part D claims by kind of drug, 2024
- Generic338 claims93%
- Brand-name27 claims7%
Drug classes CMS tracks in Martha Flagg's Part D claims, 2024
- Opioids6%23 of 365 claims
- Antibiotics25%92 of 365 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Martha L. Flagg takes part in Medicare
Martha Flagg accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
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Martha L. Flagg received $24 in industry payments in 2025
CMS Open Payments shows 1 general payment to Martha Flagg from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Astellas Pharma US Inc paid the most, $24.
Companies that paid Martha Flagg the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Martha L. Flagg's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Martha L. Flagg
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Martha L. Flagg's NPI number?
Martha L. Flagg's NPI number is 1689908832. It was assigned on September 21, 2009, and it is active in the NPI Registry.
What does Martha L. Flagg specialize in?
Martha L. Flagg is an acute care nurse practitioner in Kerrville, Texas. The primary specialty in the NPI Registry is Acute Care Nurse Practitioner (taxonomy code 363LA2100X).
Where does Martha L. Flagg practice?
Martha Flagg practices at 551 Hill Country Drive, Kerrville, TX 78028. Martha Flagg's primary practice is Peterson Regional Medical Center in Kerrville, Texas, part of Peterson Health. Dmand AI also links Martha Flagg to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Martha L. Flagg's office phone number?
The practice phone on file for Martha Flagg is (830) 896-4200.
What is Martha L. Flagg's medical license number?
Martha Flagg holds Texas license AP118220.
Which hospitals is Martha L. Flagg affiliated with?
Martha Flagg practices at Peterson Regional Medical Center in Kerrville, Texas. Dmand AI links Martha Flagg to 1 more hospital.
What medical group is Martha L. Flagg part of?
Martha Flagg is linked to US Acute Care Solutions. Dmand AI links Martha Flagg to 1 more medical group.
Does Martha L. Flagg accept Medicare?
Yes. CMS lists Martha Flagg as accepting Medicare assignment.
How many Medicare patients does Martha L. Flagg see?
CMS counts 61 Medicare patients who saw Martha Flagg in 2024, with an average age of 78.
Has Martha L. Flagg received payments from drug or device companies?
CMS Open Payments shows $24 in general payments to Martha Flagg from 1 company from 2025 to 2025. The largest total came from Astellas Pharma US Inc.
How long has Martha L. Flagg been practicing?
Martha Flagg graduated from medical school in 1992, 34 years ago.
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