Dr. John Robert Clark, MD
- Medicare services, 2023
- 14
- Medicare patients, 2024
- 26
- Part D claims, 2024
- 111
- Hospital affiliations
- 1
- Industry payments
- $661
- Practice address
- 274 E Chicago St, Coldwater, MI 49036
- Practice phone
- Call (517) 279-5489
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Clark'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 Robert Clark is an OB-GYN in Coldwater, Michigan
Dr. Clark practices at Insight Hospital & Medical Center Coldwater in Coldwater, Michigan, part of ProMedica Health System.
Dr. Clark's NPI, 1457353575, was assigned on August 10, 2005. Dr. Clark graduated from University of Kentucky College of Medicine in 1984. Dr. Clark holds Michigan license JC062758.
- NPI
- 1457353575NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264342930
- NPI enumeration date
- August 10, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (517) 279-5489
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Robert Clark practices at Insight Hospital & Medical Center Coldwater in Coldwater, Michigan
Dr. Clark's primary practice is Insight Hospital & Medical Center Coldwater, at 274 E Chicago St, Coldwater, MI 49036 in Branch County. The practice phone is (517) 279-5489.
- Insight Hospital & Medical Center Coldwater274 E Chicago St, Coldwater, MI 49036 · Branch CountyPhone(517) 279-5489
Source: Dmand AI Affiliation Data
Dr. John Robert Clark is affiliated with 2 sites of care and 1 medical group
Dr. Clark's primary practice is Insight Hospital & Medical Center Coldwater in Coldwater, Michigan, part of ProMedica Health System. The medical group on file is Community Health Center of Branch County. Dmand AI also links Dr. Clark to 1 more group practice or clinic, 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 Robert Clark's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Clark practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Insight Hospital & Medical Center Coldwater | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Robert Clark is one of 1,457 OB-GYNs in Michigan
Obstetrics and gynecology is Dr. Clark's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dmand AI has Dr. Clark's licenses on file in 3 states: Michigan, Indiana and North Dakota.
Specialties and state licenses
- Obstetrics and gynecology, MichiganPrimary
- Indiana license
- North Dakota license
OB-GYNs near Dr. Clark
Counts of OB-GYNs 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 Robert Clark billed Medicare for 14 services in 2023
CMS data shows 14 Medicare services from Dr. Clark across 1 procedure code in 2023, all of them office visits, for 26 Medicare patients. Medicare paid $592 for them. Every service was in an office.
Dr. Clark's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 152023: 147%
Dr. Clark compared with the Michigan median for OB-GYNs, 2023
- Dr. Clark
- Michigan median
- Medicare services
- 14vs 3762% below
- Medicare patients
- 26vs 3321% below
- Part D claims
- 64vs 3868% above
Medians across 1,227 OB-GYNs in Michigan with Dmand AI profiles that report each measure.
Dr. Clark's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Clark and other OB-GYNs in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Robert Clark treated 26 Medicare patients in 2024, average age 72
CMS counts 26 Medicare patients who saw Dr. Clark in 2024. The largest group is 65 to 74, with 13 patients. 69% of them have high blood pressure, and 62% have high cholesterol. Their average risk score is 1.13, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Clark's median patient age at 45, with 99% women.
Dr. Clark's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Clark's Medicare patients, 2024
- High blood pressure69%
- High cholesterol62%
- Arthritis58%
- Anxiety42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Clark's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 45
Patient panel by sex, all payers
- Women99%
- Men0%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Robert Clark wrote 111 Medicare Part D claims in 2024
In 2024, Dr. Clark wrote 111 Medicare Part D claims for 34 patients. 87% of them were for generic drugs. CMS names the drug for 64 of them, across 4 drugs with 11 or more claims each, at $766 in total drug cost. In 2023, CMS named 27 claims across 2 drugs.
Dr. Clark's Part D claims by kind of drug, 2024
- Generic97 claims87%
- Brand-name14 claims13%
Dr. Clark's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Clark's Part D claims, 2024
- Antibiotics23%26 of 111 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 272024: 64137%
Drugs named by CMS: 4 in 2024, 2 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. John Robert Clark takes part in Medicare
Dr. Clark accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Removal of the uterus: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. John Robert Clark received $661 in industry payments from 2016 to 2025
CMS Open Payments shows 34 general payments to Dr. Clark from 13 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 75% of the total. Intuitive Surgical, Inc. paid the most, $184.
General payments to Dr. Clark by program year, 2016 to 2025
General payments to Dr. Clark by kind, 2016 to 2025
- Food and beverage$49775%
- Travel and lodging$14221%
- Education$223%
Companies that paid Dr. Clark the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Robert Clark graduated from University of Kentucky College of Medicine
Dr. Clark graduated from University of Kentucky College of Medicine in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Robert Clark'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) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)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)Doctors and Clinicians Utilization Data (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 Robert Clark
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 Robert Clark's NPI number?
Dr. John Robert Clark's NPI number is 1457353575. It was assigned on August 10, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John Robert Clark?
Dr. John Robert Clark is an OB-GYN in Coldwater, Michigan. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. John Robert Clark practice?
Dr. Clark practices at 274 E Chicago St, Coldwater, MI 49036. Dr. Clark's primary practice is Insight Hospital & Medical Center Coldwater in Coldwater, Michigan, part of ProMedica Health System. Dmand AI also links Dr. Clark to 1 group practice or clinic.
What is Dr. John Robert Clark's office phone number?
The practice phone on file for Dr. Clark is (517) 279-5489.
What is Dr. John Robert Clark's medical license number?
Dr. Clark holds Michigan license JC062758, one of the licenses on file in 3 states.
Which states has Dr. John Robert Clark been licensed in?
Dmand AI has state licenses on file for Dr. Clark in Michigan, Indiana and North Dakota.
Which hospitals is Dr. John Robert Clark affiliated with?
Dr. Clark practices at Insight Hospital & Medical Center Coldwater in Coldwater, Michigan.
What medical group is Dr. John Robert Clark part of?
Dr. Clark is linked to Community Health Center of Branch County.
Does Dr. John Robert Clark accept Medicare?
Yes. CMS data shows Dr. Clark billed Medicare for 14 services in 2023, and Dr. Clark accepts Medicare assignment.
How many Medicare patients does Dr. John Robert Clark see?
CMS counts 26 Medicare patients who saw Dr. Clark in 2024, with an average age of 72.
Show 5 more questionsShow fewer questions
What services does Dr. John Robert Clark bill to Medicare?
In 2023, Dr. Clark's most billed Medicare services were office visit, established patient (99212).
Where did Dr. John Robert Clark go to medical school?
Dr. Clark graduated from University of Kentucky College of Medicine in 1984.
What drugs does Dr. John Robert Clark prescribe most?
In 2024 Medicare Part D data, Dr. Clark's most prescribed drugs by claims were Venlafaxine HCl ER, Nitrofurantoin Mono-Macro and Fluconazole.
Has Dr. John Robert Clark received payments from drug or device companies?
CMS Open Payments shows $661 in general payments to Dr. Clark from 13 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. John Robert Clark been practicing?
Dr. Clark graduated from medical school in 1984, 42 years ago.
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