Tammy Oliver Johnson, NP
- Medicare patients, 2024
- 203
- Part D claims, 2024
- 230
- MIPS score, 2024
- 95
- Hospital affiliations
- 4
- Industry payments
- $195
- Practice address
- 7519 Hospital Road, Gloucester, VA 23061
- Practice phone
- Call (804) 693-8800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Tammy Johnson'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 Oliver Johnson is a family nurse practitioner in Gloucester, Virginia
Tammy Johnson practices at Riverside Walter Reed Hospital in Gloucester, Virginia, part of Riverside Health System.
Tammy Johnson's NPI, 1720314883, was assigned on October 26, 2009. Tammy Johnson graduated from Virginia Commonwealth University, School of Medicine in 2009. Tammy Johnson holds Virginia license 0024168457.
- NPI
- 1720314883NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294875282
- NPI enumeration date
- October 26, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (804) 693-8800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Tammy Oliver Johnson practices at Riverside Walter Reed Hospital in Gloucester, Virginia
Tammy Johnson's primary practice is Riverside Walter Reed Hospital, at 7519 Hospital Road, Gloucester, VA 23061 in Gloucester County. The practice phone is (804) 693-8800.
- Riverside Walter Reed Hospital7519 Hospital Road, Gloucester, VA 23061 · Gloucester CountyPhone(804) 693-8800
Source: Dmand AI Affiliation Data
Tammy Oliver Johnson is affiliated with 6 sites of care and 1 medical group
Tammy Johnson's primary practice is Riverside Walter Reed Hospital in Gloucester, Virginia, part of Riverside Health System. Tammy Johnson is also affiliated with Riverside Regional Medical Center. The medical group on file is Riverside Gastroenterology Specialists. Dmand AI also links Tammy Johnson to 2 more hospitals, 1 group practice or clinic and 1 home health agency, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Tammy Oliver Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Tammy Johnson practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Riverside Walter Reed Hospital | Available with a free account |
| +5 more affiliated sites | 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 Riverside Health System and 6.2K+ hospitals, with verified contacts in the same login.
Tammy Oliver Johnson is one of 4,876 family nurse practitioners in Virginia
Family is Tammy Johnson's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Tammy Johnson is licensed in Virginia.
Specialties and state licenses
- Family nurse practitioner, VirginiaPrimary
Family nurse practitioners near Tammy Johnson
Counts of family 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 Oliver Johnson treated 203 Medicare patients in 2024, average age 77
CMS counts 203 Medicare patients who saw Tammy Johnson in 2024. The largest group is 75 to 84, with 76 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 11% are also on Medicaid. Their average risk score is 2.17, 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 Johnson's median patient age at 66, with 47% women.
Tammy Johnson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Tammy Johnson's Medicare patients by sex, 2024
- Women10150%
- Men10250%
Chronic conditions among Tammy Johnson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Chronic kidney disease47%
- Diabetes46%
- Heart failure45%
- Ischemic heart disease45%
- Atrial fibrillation42%
Share of Medicare patients with each condition. A patient can have several.
Tammy Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Tammy Oliver Johnson wrote 230 Medicare Part D claims in 2024
In 2024, Tammy Johnson wrote 230 Medicare Part D claims for 94 patients. 89% of them were for generic drugs.
Tammy Johnson's Part D claims by kind of drug, 2024
- Generic205 claims89%
- Brand-name25 claims11%
Drug classes CMS tracks in Tammy Johnson's Part D claims, 2024
- Antibiotics20%46 of 230 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 Oliver Johnson scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Tammy Johnson for performance year 2024, reported through an alternative payment model (APM). Tammy Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Tammy Johnson's MIPS scores, performance year 2024
- 95of 100Final score
- 92.9of 100Quality
- 95of 100Promoting Interoperability
- 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 Oliver Johnson received $195 in industry payments in 2025
CMS Open Payments shows 11 general payments to Tammy Johnson from 8 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $46.
Companies that paid Tammy Johnson the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Tammy Oliver Johnson graduated from Virginia Commonwealth University, School of Medicine
Tammy Johnson graduated from Virginia Commonwealth University, School of Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Tammy Oliver Johnson'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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 Oliver Johnson
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 Oliver Johnson's NPI number?
Tammy Oliver Johnson's NPI number is 1720314883. It was assigned on October 26, 2009, and it is active in the NPI Registry.
What does Tammy Oliver Johnson specialize in?
Tammy Oliver Johnson is a family nurse practitioner in Gloucester, Virginia. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Tammy Oliver Johnson practice?
Tammy Johnson practices at 7519 Hospital Road, Gloucester, VA 23061. Tammy Johnson's primary practice is Riverside Walter Reed Hospital in Gloucester, Virginia, part of Riverside Health System. Dmand AI also links Tammy Johnson to 2 hospitals, 1 group practice or clinic and 1 home health agency.
What is Tammy Oliver Johnson's office phone number?
The practice phone on file for Tammy Johnson is (804) 693-8800.
What is Tammy Oliver Johnson's medical license number?
Tammy Johnson holds Virginia license 0024168457.
Which hospitals is Tammy Oliver Johnson affiliated with?
Tammy Johnson practices at Riverside Walter Reed Hospital in Gloucester, Virginia. Tammy Johnson is also affiliated with Riverside Regional Medical Center. Dmand AI links Tammy Johnson to 2 more hospitals.
What medical group is Tammy Oliver Johnson part of?
Tammy Johnson is linked to Riverside Gastroenterology Specialists.
Does Tammy Oliver Johnson accept Medicare?
Yes. CMS lists Tammy Johnson as accepting Medicare assignment.
What is Tammy Oliver Johnson's MIPS score?
Tammy Johnson's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Tammy Oliver Johnson see?
CMS counts 203 Medicare patients who saw Tammy Johnson in 2024, with an average age of 77.
Show 3 more questionsShow fewer questions
Where did Tammy Oliver Johnson go to medical school?
Tammy Johnson graduated from Virginia Commonwealth University, School of Medicine in 2009.
Has Tammy Oliver Johnson received payments from drug or device companies?
CMS Open Payments shows $195 in general payments to Tammy Johnson from 8 companies from 2025 to 2025. The largest total came from Abbott Laboratories.
How long has Tammy Oliver Johnson been practicing?
Tammy Johnson graduated from medical school in 2009, 17 years ago.
Selling to family practices?
See family nurse practitioners in Virginia 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