Dr. Ronald A. Bays, MD
- Medicare services, 2024
- 6,313
- Medicare patients, 2024
- 487
- Part D claims, 2024
- 573
- Hospital affiliations
- 5
- Industry payments
- $43,503
- Practice address
- 4701 Towne Centre Rd Suite 202 Suite 202, Saginaw, MI 48604-2800
- Practice phone
- Call (989) 790-2600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mid Michigan Vascular Surgery
Multi-specialty group site · Saginaw, Michigan
Find Dr. Bays' 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. Ronald A. Bays is a vascular surgeon in Saginaw, Michigan
Dr. Bays practices at Mid Michigan Vascular Surgery in Saginaw, Michigan.
Dr. Bays' NPI, 1073596037, was assigned on November 23, 2005. Dr. Bays graduated from Indiana University School of Medicine in 1988. Dr. Bays holds Michigan license RB053548.
- NPI
- 1073596037NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305738758
- NPI enumeration date
- November 23, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (989) 790-2600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ronald A. Bays practices at Mid Michigan Vascular Surgery in Saginaw, Michigan
Dr. Bays' primary practice is Mid Michigan Vascular Surgery, at 4701 Towne Centre Rd Suite 202 Suite 202, Saginaw, MI 48604-2800. The practice phone is (989) 790-2600.
- Mid Michigan Vascular Surgery4701 Towne Centre Rd Suite 202 Suite 202, Saginaw, MI 48604-2800Phone(989) 790-2600
Source: Dmand AI Affiliation Data
Dr. Ronald A. Bays is affiliated with 6 sites of care and 1 medical group
Dr. Bays' primary practice is Mid Michigan Vascular Surgery in Saginaw, Michigan. Dr. Bays is also affiliated with Covenant Medical Center Harrison. The medical group on file is Mid Michigan Vascular Surgery. Dmand AI also links Dr. Bays to 4 more hospitals, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ronald A. Bays' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Bays practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mid Michigan Vascular Surgery | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ronald A. Bays is one of 171 vascular surgeons in Michigan
Vascular surgery is Dr. Bays' primary specialty in the NPI Registry, under taxonomy code 2086S0129X. Dr. Bays is licensed in Michigan.
Specialties and state licenses
- Vascular surgery, MichiganPrimary
Vascular surgeons near Dr. Bays
Counts of vascular surgeons 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. Ronald A. Bays billed Medicare for 6,313 services in 2024
CMS data shows 6,313 Medicare services from Dr. Bays across 31 procedure codes in 2024, for 487 Medicare patients. Medicare paid $251,563 for them.
Dr. Bays' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 6,6992024: 4,53632%
- Tests and treatments
- 2023: 7832024: 88213%
- Office and hospital visits
- 2023: 6122024: 5933%
- Drugs given in the office
- 2023: 2172024: 14434%
- Imaging
- 2023: 1232024: 1193%
- Surgery
- 2023: 532024: 3926%
Where Dr. Bays' Medicare services took place, 2024
- In an office6,19798%
- In a facility1162%
Dr. Bays compared with the Michigan median for vascular surgeons, 2024
- Dr. Bays
- Michigan median
- Medicare services
- 6,313vs 8077.8 times
- Medicare patients
- 487vs 38526% above
- Part D claims
- 549vs 816.8 times
Medians across 163 vascular surgeons in Michigan with Dmand AI profiles that report each measure.
Dr. Bays' 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. Bays and other vascular surgeons in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ronald A. Bays treated 487 Medicare patients in 2024, average age 76
CMS counts 487 Medicare patients who saw Dr. Bays in 2024. The largest group is 75 to 84, with 218 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 15% are also on Medicaid. Their average risk score is 2.01, 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. Bays' median patient age at 75, with 46% women.
Dr. Bays' Medicare patients by age, 2024
Dr. Bays' Medicare patients by sex, 2024
- Women23248%
- Men25552%
Chronic conditions among Dr. Bays' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Ischemic heart disease55%
- Chronic kidney disease44%
- Diabetes42%
- COPD38%
- Mood disorders33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Bays' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women46%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ronald A. Bays wrote 573 Medicare Part D claims in 2024
In 2024, Dr. Bays wrote 573 Medicare Part D claims for 183 patients. 90% of them were for generic drugs. CMS names the drug for 549 of them, across 5 drugs with 11 or more claims each, at $56,311 in total drug cost. In 2023, CMS named 593 claims across 5 drugs.
Dr. Bays' Part D claims by kind of drug, 2024
- Generic516 claims90%
- Brand-name57 claims10%
Dr. Bays' 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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5932024: 5497%
Drugs named by CMS: 5 in 2024, 5 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
Dr. Ronald A. Bays ranks in the 83rd percentile for leg revascularization (restoring blood flow) in Medicare
Dr. Bays accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 23 procedures of leg revascularization (restoring blood flow) by Dr. Bays, more than 83% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Bays ranks in Medicare procedure volume
- Leg revascularization (restoring blood flow)
- 83rd percentile23 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Spinal fusion: 1 to 10 procedures (CMS shows small counts as a range)
Varicose vein removal: 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. Ronald A. Bays received $43,503 in industry payments from 2016 to 2025
CMS Open Payments shows 393 general payments to Dr. Bays from 36 drug and device companies from 2016 to 2025. Device or supply loans make up the largest share, 61% of the total. AngioDynamics, Inc. paid the most, $26,500.
General payments to Dr. Bays by program year, 2016 to 2025
General payments to Dr. Bays by kind, 2016 to 2025
- Device or supply loans$26,41761%
- Food and beverage$10,79425%
- Travel and lodging$4,0689%
- Consulting fees$1,5003%
- Education$7252%
Companies that paid Dr. Bays 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. Ronald A. Bays graduated from Indiana University School of Medicine
Dr. Bays graduated from Indiana University School of Medicine in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ronald A. Bays'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 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. Ronald A. Bays
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. Ronald A. Bays' NPI number?
Dr. Ronald A. Bays' NPI number is 1073596037. It was assigned on November 23, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Ronald A. Bays?
Dr. Ronald A. Bays is a vascular surgeon in Saginaw, Michigan. The primary specialty in the NPI Registry is Vascular Surgery Physician (taxonomy code 2086S0129X).
Where does Dr. Ronald A. Bays practice?
Dr. Bays practices at 4701 Towne Centre Rd Suite 202 Suite 202, Saginaw, MI 48604-2800. Dr. Bays' primary practice is Mid Michigan Vascular Surgery in Saginaw, Michigan. Dmand AI also links Dr. Bays to 4 hospitals.
What is Dr. Ronald A. Bays' office phone number?
The practice phone on file for Dr. Bays is (989) 790-2600.
What is Dr. Ronald A. Bays' medical license number?
Dr. Bays holds Michigan license RB053548.
Which hospitals is Dr. Ronald A. Bays affiliated with?
Dr. Bays is affiliated with Covenant Medical Center Harrison. Dmand AI links Dr. Bays to 4 more hospitals.
What medical group is Dr. Ronald A. Bays part of?
Dr. Bays is linked to Mid Michigan Vascular Surgery.
Does Dr. Ronald A. Bays accept Medicare?
Yes. CMS data shows Dr. Bays billed Medicare for 6,313 services in 2024, and Dr. Bays accepts Medicare assignment.
How many Medicare patients does Dr. Ronald A. Bays see?
CMS counts 487 Medicare patients who saw Dr. Bays in 2024, with an average age of 76.
What services does Dr. Ronald A. Bays bill to Medicare?
In 2024, Dr. Bays' most billed Medicare services were medicare temporary code (Q9967), office visit, established patient (99213) and special service (99153).
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Where did Dr. Ronald A. Bays go to medical school?
Dr. Bays graduated from Indiana University School of Medicine in 1988.
What drugs does Dr. Ronald A. Bays prescribe most?
In 2024 Medicare Part D data, Dr. Bays' most prescribed drugs by claims were Clopidogrel, Xarelto and Atorvastatin Calcium.
Has Dr. Ronald A. Bays received payments from drug or device companies?
CMS Open Payments shows $43,503 in general payments to Dr. Bays from 36 companies from 2016 to 2025. The largest total came from AngioDynamics, Inc.
How long has Dr. Ronald A. Bays been practicing?
Dr. Bays graduated from medical school in 1988, 38 years ago.
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