Tammy Rena Hempstead, FNP
- Medicare patients, 2024
- 351
- Part D claims, 2024
- 6,033
- MIPS score, 2024
- 93
- Industry payments
- $38
- Affiliated sites
- 1
- Practice address
- 220 W Colfax Ave, South Bend, IN 46601
- Practice phone
- Call (574) 546-1900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Guidestar Eldercare
South Bend, Indiana
Find Tammy Hempstead'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.
Tammy Rena Hempstead is a nurse practitioner in South Bend, Indiana
Tammy Hempstead practices at Guidestar Eldercare in South Bend, Indiana.
Tammy Hempstead's NPI, 1629546841, was assigned on November 6, 2018. Tammy Hempstead holds Indiana license 28161778A.
- NPI
- 1629546841NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4385989193
- NPI enumeration date
- November 6, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (574) 546-1900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Tammy Rena Hempstead practices at Guidestar Eldercare in South Bend, Indiana
Tammy Hempstead's primary practice is Guidestar Eldercare, at 220 W Colfax Ave, South Bend, IN 46601 in St Joseph County. The practice phone is (574) 546-1900.
- Guidestar Eldercare220 W Colfax Ave, South Bend, IN 46601 · St Joseph CountyPhone(574) 546-1900
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Tammy Rena Hempstead is affiliated with 2 sites of care and 1 medical group
Tammy Hempstead's primary practice is Guidestar Eldercare in South Bend, Indiana. The medical group on file is GuideStar Eldercare. Dmand AI also links Tammy Hempstead to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Tammy Rena Hempstead's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Tammy Hempstead practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Guidestar Eldercare | Available with a free account |
| +1 more affiliated site | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Tammy Rena Hempstead is one of 2,019 nurse practitioners in Indiana
Nurse practitioner is Tammy Hempstead's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Tammy Hempstead is licensed in Indiana.
Specialties and state licenses
- Nurse practitioner, IndianaPrimary
Nurse practitioners near Tammy Hempstead
Counts of 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
Tammy Rena Hempstead treated 351 Medicare patients in 2024, average age 76
CMS counts 351 Medicare patients who saw Tammy Hempstead in 2024. The largest group is 85 and over, with 110 patients. 75% of them have anxiety, and 75% have depression. 86% are also on Medicaid. Their average risk score is 2.20, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Tammy Hempstead's median patient age at 75, with 60% women.
Tammy Hempstead's Medicare patients by age, 2024
Tammy Hempstead's Medicare patients by sex, 2024
- Women22263%
- Men12937%
Chronic conditions among Tammy Hempstead's Medicare patients, 2024
- Anxiety75%
- Depression75%
- High blood pressure75%
- Mood disorders75%
- Alzheimer's and dementia74%
- High cholesterol74%
- Arthritis45%
- COPD43%
Share of Medicare patients with each condition. A patient can have several.
Tammy Hempstead's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Tammy Rena Hempstead wrote 6,033 Medicare Part D claims in 2024
In 2024, Tammy Hempstead wrote 6,033 Medicare Part D claims for 467 patients. 97% of them were for generic drugs.
Tammy Hempstead's Part D claims by kind of drug, 2024
- Generic5,861 claims97%
- Brand-name172 claims3%
Drug classes CMS tracks in Tammy Hempstead's Part D claims, 2024
- Antipsychotics, patients 65 and over7%441 of 6,033 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
Tammy Rena Hempstead scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Tammy Hempstead for performance year 2024, reported as part of a group. Tammy Hempstead accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Tammy Hempstead's MIPS scores, performance year 2024
- 93of 100Final score
- 80.1of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Tammy Rena Hempstead received $38 in industry payments in 2025
CMS Open Payments shows 2 general payments to Tammy Hempstead from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Teva Pharmaceuticals USA, Inc. paid the most, $20.
Companies that paid Tammy Hempstead 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 Tammy Rena Hempstead'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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)Clinician Public Reporting: Overall MIPS Performance (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 Tammy Rena Hempstead
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Tammy Rena Hempstead's NPI number?
Tammy Rena Hempstead's NPI number is 1629546841. It was assigned on November 6, 2018, and it is active in the NPI Registry.
What does Tammy Rena Hempstead specialize in?
Tammy Rena Hempstead is a nurse practitioner in South Bend, Indiana. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Tammy Rena Hempstead practice?
Tammy Hempstead practices at 220 W Colfax Ave, South Bend, IN 46601. Tammy Hempstead's primary practice is Guidestar Eldercare in South Bend, Indiana. Dmand AI also links Tammy Hempstead to 1 group practice or clinic.
What is Tammy Rena Hempstead's office phone number?
The practice phone on file for Tammy Hempstead is (574) 546-1900.
What is Tammy Rena Hempstead's medical license number?
Tammy Hempstead holds Indiana license 28161778A.
What medical group is Tammy Rena Hempstead part of?
Tammy Hempstead is linked to GuideStar Eldercare.
Does Tammy Rena Hempstead accept Medicare?
Yes. CMS lists Tammy Hempstead as accepting Medicare assignment.
What is Tammy Rena Hempstead's MIPS score?
Tammy Hempstead's MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.
How many Medicare patients does Tammy Rena Hempstead see?
CMS counts 351 Medicare patients who saw Tammy Hempstead in 2024, with an average age of 76.
Has Tammy Rena Hempstead received payments from drug or device companies?
CMS Open Payments shows $38 in general payments to Tammy Hempstead from 2 companies from 2025 to 2025. The largest total came from Teva Pharmaceuticals USA, Inc.
How long has Tammy Rena Hempstead been practicing?
Tammy Hempstead graduated from medical school in 2018, 8 years ago.
Selling to nurse practitioner practices?
See nurse practitioners in Indiana by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card