Dr. John L. Tamminen III, MD
- Medicare services, 2024
- 1,354
- Medicare patients, 2024
- 1,384
- Hospital affiliations
- 6
- Industry payments
- $13
- Medical groups
- 5
- Practice address
- 1906 Belleview Avenue, SE, Roanoke, VA 24014
- Practice phone
- Call (540) 981-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Tamminen'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.
Dr. John L. Tamminen III is a diagnostic radiologist in Roanoke, Virginia
Dr. Tamminen practices at Carilion Roanoke Memorial Hospital in Roanoke, Virginia, part of Carilion Clinic.
Dr. Tamminen's NPI, 1740250927, was assigned on January 23, 2006. Dr. Tamminen graduated from Eastern Virginia Medical School in 1983. Dr. Tamminen holds Virginia license 0101-041737.
- NPI
- 1740250927NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3870502784
- NPI enumeration date
- January 23, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (540) 981-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John L. Tamminen III practices at Carilion Roanoke Memorial Hospital in Roanoke, Virginia
Dr. Tamminen's primary practice is Carilion Roanoke Memorial Hospital, at 1906 Belleview Avenue, SE, Roanoke, VA 24014 in Roanoke City. The practice phone is (540) 981-7000.
- Carilion Roanoke Memorial Hospital1906 Belleview Avenue, SE, Roanoke, VA 24014 · Roanoke CityPhone(540) 981-7000
Source: Dmand AI Affiliation Data
Dr. John L. Tamminen III is affiliated with 6 sites of care and 5 medical groups
Dr. Tamminen's primary practice is Carilion Roanoke Memorial Hospital in Roanoke, Virginia, part of Carilion Clinic. Dr. Tamminen is also affiliated with Carilion New River Valley Medical Center. The medical group on file is Carilion Clinic. Dmand AI also links Dr. Tamminen to 4 more hospitals and 4 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John L. Tamminen III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tamminen practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Carilion Roanoke Memorial Hospital | Available with a free account |
| +5 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John L. Tamminen III is one of 959 diagnostic radiologists in Virginia
Diagnostic radiology is Dr. Tamminen's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Tamminen is licensed in Virginia.
Specialties and state licenses
- Diagnostic radiology, VirginiaPrimary
Diagnostic radiologists near Dr. Tamminen
Counts of diagnostic radiologists 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
Dr. John L. Tamminen III billed Medicare for 1,354 services in 2024
CMS data shows 1,354 Medicare services from Dr. Tamminen across 36 procedure codes in 2024, for 1,384 Medicare patients. Medicare paid $35,371 for them.
Dr. Tamminen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,3692024: 1,3541%
- Tests and treatments
- 2023: 122024: 0100%
Where Dr. Tamminen's Medicare services took place, 2024
- In an office1209%
- In a facility1,23491%
Dr. Tamminen compared with the Virginia median for diagnostic radiologists, 2024
- Dr. Tamminen
- Virginia median
- Medicare services
- 1,354vs 2,86453% below
- Medicare patients
- 1,384vs 2,06433% below
Medians across 976 diagnostic radiologists in Virginia with Dmand AI profiles that report each measure.
Dr. Tamminen's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Tamminen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tamminen and other diagnostic radiologists in Virginia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John L. Tamminen III treated 1,384 Medicare patients in 2024, average age 75
CMS counts 1,384 Medicare patients who saw Dr. Tamminen in 2024. The largest group is 65 to 74, with 549 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.75, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Tamminen's median patient age at 72, with 64% women.
Dr. Tamminen's Medicare patients by age, 2024
Dr. Tamminen's Medicare patients by sex, 2024
- Women80158%
- Men58342%
Chronic conditions among Dr. Tamminen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis59%
- Chronic kidney disease39%
- Anxiety38%
- Diabetes38%
- Mood disorders37%
- Depression34%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tamminen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women64%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. John L. Tamminen III takes part in Medicare
Dr. Tamminen 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)
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Dr. John L. Tamminen III received $13 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Tamminen from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Siemens Medical Solutions USA, Inc. paid the most, $13.
Companies that paid Dr. Tamminen the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John L. Tamminen III graduated from Eastern Virginia Medical School
Dr. Tamminen graduated from Eastern Virginia Medical School in 1983.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John L. Tamminen III'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - 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) |
| 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 Dr. John L. Tamminen III
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John L. Tamminen III's NPI number?
Dr. John L. Tamminen III's NPI number is 1740250927. It was assigned on January 23, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John L. Tamminen III?
Dr. John L. Tamminen III is a diagnostic radiologist in Roanoke, Virginia. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. John L. Tamminen III practice?
Dr. Tamminen practices at 1906 Belleview Avenue, SE, Roanoke, VA 24014. Dr. Tamminen's primary practice is Carilion Roanoke Memorial Hospital in Roanoke, Virginia, part of Carilion Clinic. Dmand AI also links Dr. Tamminen to 4 hospitals and 4 medical groups.
What is Dr. John L. Tamminen III's office phone number?
The practice phone on file for Dr. Tamminen is (540) 981-7000.
What is Dr. John L. Tamminen III's medical license number?
Dr. Tamminen holds Virginia license 0101-041737.
Which hospitals is Dr. John L. Tamminen III affiliated with?
Dr. Tamminen practices at Carilion Roanoke Memorial Hospital in Roanoke, Virginia. Dr. Tamminen is also affiliated with Carilion New River Valley Medical Center. Dmand AI links Dr. Tamminen to 4 more hospitals.
What medical group is Dr. John L. Tamminen III part of?
Dr. Tamminen is linked to Carilion Clinic. Dmand AI links Dr. Tamminen to 4 more medical groups.
Does Dr. John L. Tamminen III accept Medicare?
Yes. CMS data shows Dr. Tamminen billed Medicare for 1,354 services in 2024, and Dr. Tamminen accepts Medicare assignment.
How many Medicare patients does Dr. John L. Tamminen III see?
CMS counts 1,384 Medicare patients who saw Dr. Tamminen in 2024, with an average age of 75.
What services does Dr. John L. Tamminen III bill to Medicare?
In 2024, Dr. Tamminen's most billed Medicare services were diagnostic imaging (71045), diagnostic imaging (70450) and diagnostic imaging (74177).
Show 3 more questionsShow fewer questions
Where did Dr. John L. Tamminen III go to medical school?
Dr. Tamminen graduated from Eastern Virginia Medical School in 1983.
Has Dr. John L. Tamminen III received payments from drug or device companies?
CMS Open Payments shows $13 in general payments to Dr. Tamminen from 1 company from 2017 to 2017. The largest total came from Siemens Medical Solutions USA, Inc.
How long has Dr. John L. Tamminen III been practicing?
Dr. Tamminen graduated from medical school in 1983, 43 years ago.
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