Dr. Carolyn M. Johnston, MD
- Medicare services, 2021
- 15
- Part D claims, 2021
- 12
- Hospital affiliations
- 1
- Medical group
- 1
- State licenses
- 5
- Practice address
- 916 Myrtle Ave, Sturgis, MI 49091
- Practice phone
- Call (269) 651-7824
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Johnston'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. Carolyn M. Johnston is a gynecologic oncologist in Sturgis, Michigan
Dr. Johnston practices at Sturgis Hospital in Sturgis, Michigan.
Dr. Johnston's NPI, 1417040544, was assigned on October 2, 2006. Dr. Johnston graduated from Yale School of Medicine in 1984. Dr. Johnston's Florida license number on file is ME144006.
- NPI
- 1417040544NPI Registry (opens in a new tab)
- NPI enumeration date
- October 2, 2006
- NPI status
- Active
- Practice phone
- (269) 651-7824
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Carolyn M. Johnston practices at Sturgis Hospital in Sturgis, Michigan
Dr. Johnston's primary practice is Sturgis Hospital, at 916 Myrtle Ave, Sturgis, MI 49091 in St. Joseph County. The practice phone is (269) 651-7824.
- Sturgis Hospital916 Myrtle Ave, Sturgis, MI 49091 · St. Joseph CountyPhone(269) 651-7824
Source: Dmand AI Affiliation Data
Dr. Carolyn M. Johnston is affiliated with 1 site of care and 1 medical group
Dr. Johnston's primary practice is Sturgis Hospital in Sturgis, Michigan. The medical group on file is City of Hope Atlanta.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Carolyn M. Johnston's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnston practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sturgis Hospital | 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 Sturgis Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Carolyn M. Johnston is one of 52 gynecologic oncologists in Michigan
Gynecologic oncology is Dr. Johnston's primary specialty in the NPI Registry, under taxonomy code 207VX0201X. Dr. Johnston is board certified in gynecologic oncology by the American Board of Obstetrics and Gynecology. Dmand AI has Dr. Johnston's licenses on file in 5 states: Florida, Michigan, Tennessee, Georgia and Massachusetts.
Specialties and state licenses
- Gynecologic oncology, FloridaPrimary
- Obstetrics and gynecology, Michigan
- Tennessee license
- Georgia license
- Massachusetts license
Gynecologic oncologists near Dr. Johnston
Counts of gynecologic oncologists 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. Carolyn M. Johnston billed Medicare for 15 services in 2021
CMS data shows 15 Medicare services from Dr. Johnston across 1 procedure code in 2021, all of them office visits. Medicare paid $1,506 for them. Every service was in an office.
Dr. Johnston's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 332021: 1555%
Dr. Johnston compared with the Michigan median for gynecologic oncologists, 2021
- Dr. Johnston
- Michigan median
- Medicare services
- 15vs 16791% below
- Part D claims
- 12vs 10288% below
Medians across 53 gynecologic oncologists in Michigan with Dmand AI profiles that report each measure.
Dr. Johnston's most billed Medicare procedure codes, 2021
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. Johnston?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Johnston and other gynecologic oncologists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Carolyn M. Johnston's patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Dr. Johnston's median patient age at 72, with 100% women.
Dr. Johnston'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
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Carolyn M. Johnston wrote 12 Medicare Part D claims in 2021
In 2021, Dr. Johnston wrote 12 Medicare Part D claims. They cover 1 drug, with $177,639 in total drug cost. In 2018, CMS named 119 claims across 6 drugs.
Dr. Johnston's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2018 to 2021
- 2018
- 2021
- Claims for drugs CMS names
- 2018: 1192021: 1290%
Drugs named by CMS: 1 in 2021, 6 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Carolyn M. Johnston graduated from Yale School of Medicine
Dr. Johnston graduated from Yale School of Medicine in 1984.
- Medical school
- Board certified in gynecologic oncology
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Sources for Dr. Carolyn M. Johnston'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 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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. Carolyn M. Johnston
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. Carolyn M. Johnston's NPI number?
Dr. Carolyn M. Johnston's NPI number is 1417040544. It was assigned on October 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Carolyn M. Johnston?
Dr. Carolyn M. Johnston is a gynecologic oncologist in Sturgis, Michigan. The primary specialty in the NPI Registry is Gynecologic Oncology Physician (taxonomy code 207VX0201X).
Where does Dr. Carolyn M. Johnston practice?
Dr. Johnston practices at 916 Myrtle Ave, Sturgis, MI 49091. Dr. Johnston's primary practice is Sturgis Hospital in Sturgis, Michigan.
What is Dr. Carolyn M. Johnston's office phone number?
The practice phone on file for Dr. Johnston is (269) 651-7824.
What is Dr. Carolyn M. Johnston's medical license number?
Dr. Johnston's Florida license number on file is ME144006, one of the licenses on file in 5 states.
Which states has Dr. Carolyn M. Johnston been licensed in?
Dmand AI has state licenses on file for Dr. Johnston in Florida (2020 to 2024), Michigan (1990 to 2027), Tennessee (2023 to 2024), Georgia (2019 to 2023) and Massachusetts (2019 to 2023).
Which hospitals is Dr. Carolyn M. Johnston affiliated with?
Dr. Johnston practices at Sturgis Hospital in Sturgis, Michigan.
What medical group is Dr. Carolyn M. Johnston part of?
Dr. Johnston is linked to City of Hope Atlanta.
Does Dr. Carolyn M. Johnston accept Medicare?
Yes. CMS data shows Dr. Johnston billed Medicare for 15 services in 2021.
Is Dr. Carolyn M. Johnston board certified?
Yes. Dr. Johnston is board certified in gynecologic oncology by the American Board of Obstetrics and Gynecology.
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What services does Dr. Carolyn M. Johnston bill to Medicare?
In 2021, Dr. Johnston's most billed Medicare services were office visit, established patient (99214).
Where did Dr. Carolyn M. Johnston go to medical school?
Dr. Johnston graduated from Yale School of Medicine in 1984.
What drugs does Dr. Carolyn M. Johnston prescribe most?
In 2021 Medicare Part D data, Dr. Johnston's most prescribed drugs by claims were Lynparza.
How long has Dr. Carolyn M. Johnston been practicing?
Dr. Johnston graduated from medical school in 1984, 42 years ago.
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