Dr. Jeffrey Thewes, MD
- Medicare services, 2024
- 176
- Medicare patients, 2024
- 164
- Part D claims, 2024
- 171
- Hospital affiliations
- 2
- Industry payments
- $11
- Practice address
- 1900 Columbus Ave, Bay City, MI 48708
- Practice phone
- Call (989) 894-9510
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Thewes' 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. Jeffrey Thewes is an emergency medicine physician in Bay City, Michigan
Dr. Thewes practices at McLaren Bay Region in Bay City, Michigan, part of McLaren Health Care.
Dr. Thewes' NPI, 1649329418, was assigned on January 9, 2007. Dr. Thewes graduated from Georgetown University School of Medicine in 1995. Dr. Thewes holds Michigan license 43801066600.
- NPI
- 1649329418NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2466418652
- NPI enumeration date
- January 9, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (989) 894-9510
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jeffrey Thewes practices at McLaren Bay Region in Bay City, Michigan
Dr. Thewes' primary practice is McLaren Bay Region, at 1900 Columbus Ave, Bay City, MI 48708 in Bay County. The practice phone is (989) 894-9510.
- McLaren Bay Region1900 Columbus Ave, Bay City, MI 48708 · Bay CountyPhone(989) 894-9510
Source: Dmand AI Affiliation Data
Dr. Jeffrey Thewes is affiliated with 2 sites of care and 5 medical groups
Dr. Thewes' primary practice is McLaren Bay Region in Bay City, Michigan, part of McLaren Health Care. Dr. Thewes is also affiliated with McLaren Greater Lansing. The medical group on file is McLaren Medical Group. Dmand AI also links Dr. Thewes to 4 more 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. Jeffrey Thewes' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Thewes practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| McLaren Bay Region | Available with a free account |
| +1 more site and 4 medical groups | 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 McLaren Health Care and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Jeffrey Thewes is one of 2,045 emergency medicine physicians in Michigan
Emergency medicine is Dr. Thewes' primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Thewes is licensed in Michigan.
Specialties and state licenses
- Emergency medicine, MichiganPrimary
Emergency medicine physicians near Dr. Thewes
Counts of emergency medicine physicians 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. Jeffrey Thewes billed Medicare for 176 services in 2024
CMS data shows 176 Medicare services from Dr. Thewes across 5 procedure codes in 2024, for 164 Medicare patients. Medicare paid $18,486 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Thewes' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1382024: 15714%
- Tests and treatments
- 2023: 02024: 19
Dr. Thewes compared with the Michigan median for emergency medicine physicians, 2024
- Dr. Thewes
- Michigan median
- Medicare services
- 176vs 23425% below
- Medicare patients
- 164vs 21423% below
- Part D claims
- 78vs 4670% above
Medians across 1,937 emergency medicine physicians in Michigan with Dmand AI profiles that report each measure.
Dr. Thewes' 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Thewes and other emergency medicine physicians in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jeffrey Thewes treated 164 Medicare patients in 2024, average age 70
CMS counts 164 Medicare patients who saw Dr. Thewes in 2024. The largest group is under 65, with 48 patients. 75% of them have high blood pressure, and 66% have high cholesterol. 42% are also on Medicaid. Their average risk score is 1.99, 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. Thewes' median patient age at 62, with 55% women.
Dr. Thewes' Medicare patients by age, 2024
Dr. Thewes' Medicare patients by sex, 2024
- Women9659%
- Men6841%
Chronic conditions among Dr. Thewes' Medicare patients, 2024
- High blood pressure75%
- High cholesterol66%
- Arthritis58%
- Mood disorders48%
- Anxiety47%
- Depression45%
- Ischemic heart disease42%
- COPD37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Thewes' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jeffrey Thewes wrote 171 Medicare Part D claims in 2024
In 2024, Dr. Thewes wrote 171 Medicare Part D claims for 113 patients. 97% of them were for generic drugs. CMS names the drug for 78 of them, across 4 drugs with 11 or more claims each, at $205 in total drug cost. In 2023, CMS named 12 claims across 1 drug.
Dr. Thewes' Part D claims by kind of drug, 2024
- Generic166 claims97%
- Brand-name and other5 claims3%
Dr. Thewes' 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. Thewes' Part D claims, 2024
- Antibiotics26%45 of 171 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: 122024: 78550%
Drugs named by CMS: 4 in 2024, 1 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. Jeffrey Thewes takes part in Medicare
Dr. Thewes 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. Jeffrey Thewes received $11 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Thewes from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. EMD Serono, Inc. paid the most, $11.
Companies that paid Dr. Thewes 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. Jeffrey Thewes graduated from Georgetown University School of Medicine
Dr. Thewes graduated from Georgetown University School of Medicine in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jeffrey Thewes'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) |
| 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. Jeffrey Thewes
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. Jeffrey Thewes' NPI number?
Dr. Jeffrey Thewes' NPI number is 1649329418. It was assigned on January 9, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Jeffrey Thewes?
Dr. Jeffrey Thewes is an emergency medicine physician in Bay City, Michigan. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Jeffrey Thewes practice?
Dr. Thewes practices at 1900 Columbus Ave, Bay City, MI 48708. Dr. Thewes' primary practice is McLaren Bay Region in Bay City, Michigan, part of McLaren Health Care. Dmand AI also links Dr. Thewes to 4 medical groups.
What is Dr. Jeffrey Thewes' office phone number?
The practice phone on file for Dr. Thewes is (989) 894-9510.
What is Dr. Jeffrey Thewes' medical license number?
Dr. Thewes holds Michigan license 43801066600.
Which hospitals is Dr. Jeffrey Thewes affiliated with?
Dr. Thewes practices at McLaren Bay Region in Bay City, Michigan. Dr. Thewes is also affiliated with McLaren Greater Lansing.
What medical group is Dr. Jeffrey Thewes part of?
Dr. Thewes is linked to McLaren Medical Group. Dmand AI links Dr. Thewes to 4 more medical groups.
Does Dr. Jeffrey Thewes accept Medicare?
Yes. CMS data shows Dr. Thewes billed Medicare for 176 services in 2024, and Dr. Thewes accepts Medicare assignment.
How many Medicare patients does Dr. Jeffrey Thewes see?
CMS counts 164 Medicare patients who saw Dr. Thewes in 2024, with an average age of 70.
What services does Dr. Jeffrey Thewes bill to Medicare?
In 2024, Dr. Thewes' most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and critical care (99291).
Show 4 more questionsShow fewer questions
Where did Dr. Jeffrey Thewes go to medical school?
Dr. Thewes graduated from Georgetown University School of Medicine in 1995.
What drugs does Dr. Jeffrey Thewes prescribe most?
In 2024 Medicare Part D data, Dr. Thewes' most prescribed drugs by claims were Naproxen, Cephalexin and Azithromycin.
Has Dr. Jeffrey Thewes received payments from drug or device companies?
CMS Open Payments shows $11 in general payments to Dr. Thewes from 1 company from 2017 to 2017. The largest total came from EMD Serono, Inc.
How long has Dr. Jeffrey Thewes been practicing?
Dr. Thewes graduated from medical school in 1995, 31 years ago.
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