Dr. Robert J. Zimmerman, MD
- Medicare services, 2024
- 713
- Medicare patients, 2024
- 440
- Part D claims, 2024
- 184
- MIPS score, 2024
- 84
- Hospital affiliations
- 1
- Practice address
- 13207 Ravenna Rd, Chardon, OH 44024
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
UH Geauga Medical Center - Medical Oncology - HOPD
Acute Care Hospital outpatient department · Chardon, Ohio
Find Dr. Zimmerman'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. Robert J. Zimmerman is an emergency medicine physician in Chardon, Ohio
Dr. Zimmerman practices at UH Geauga Medical Center - Medical Oncology - HOPD in Chardon, Ohio.
Dr. Zimmerman's NPI, 1023093960, was assigned on December 14, 2005. Dr. Zimmerman graduated from University of Texas Medical School at San Antonio in 1996. Dr. Zimmerman holds Ohio license 35073086Z.
- NPI
- 1023093960NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264410349
- NPI enumeration date
- December 14, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert J. Zimmerman practices at UH Geauga Medical Center - Medical Oncology - HOPD in Chardon, Ohio
Dr. Zimmerman's primary practice is UH Geauga Medical Center - Medical Oncology - HOPD, at 13207 Ravenna Rd, Chardon, OH 44024.
- UH Geauga Medical Center - Medical Oncology - HOPD13207 Ravenna Rd, Chardon, OH 44024
Source: Dmand AI Affiliation Data
Dr. Robert J. Zimmerman is affiliated with 2 sites of care and 8 medical groups
Dr. Zimmerman's primary practice is UH Geauga Medical Center - Medical Oncology - HOPD in Chardon, Ohio. Dr. Zimmerman is also affiliated with University Hospitals Geauga Medical Center. The medical group on file is Emergency Medicine Associates. Dmand AI also links Dr. Zimmerman to 7 more medical groups, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Robert J. Zimmerman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zimmerman practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UH Geauga Medical Center - Medical Oncology - HOPD | Available with a free account |
| +1 more site and 7 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Robert J. Zimmerman is one of 2,401 emergency medicine physicians in Ohio
Emergency medicine is Dr. Zimmerman's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Zimmerman is licensed in Ohio.
Specialties and state licenses
- Emergency medicine, OhioPrimary
Emergency medicine physicians near Dr. Zimmerman
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. Robert J. Zimmerman billed Medicare for 713 services in 2024
CMS data shows 713 Medicare services from Dr. Zimmerman across 5 procedure codes in 2024, for 440 Medicare patients. Medicare paid $60,405 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Zimmerman's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5072024: 4786%
- Tests and treatments
- 2023: 2322024: 2351%
Dr. Zimmerman compared with the Ohio median for emergency medicine physicians, 2024
- Dr. Zimmerman
- Ohio median
- Medicare services
- 713vs 2662.7 times
- Medicare patients
- 440vs 24877% above
- Part D claims
- 48vs 6526% below
Medians across 2,448 emergency medicine physicians in Ohio with Dmand AI profiles that report each measure.
Dr. Zimmerman'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. Zimmerman?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zimmerman and other emergency medicine physicians in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert J. Zimmerman treated 440 Medicare patients in 2024, average age 76
CMS counts 440 Medicare patients who saw Dr. Zimmerman in 2024. The largest group is 75 to 84, with 158 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.70, 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. Zimmerman's median patient age at 73, with 53% women.
Dr. Zimmerman's Medicare patients by age, 2024
Dr. Zimmerman's Medicare patients by sex, 2024
- Women24055%
- Men20045%
Chronic conditions among Dr. Zimmerman's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Ischemic heart disease48%
- Mood disorders42%
- Anxiety40%
- Depression39%
- Atrial fibrillation37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zimmerman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Robert J. Zimmerman wrote 184 Medicare Part D claims in 2024
In 2024, Dr. Zimmerman wrote 184 Medicare Part D claims for 113 patients. 88% of them were for generic drugs. CMS names the drug for 48 of them, across 3 drugs with 11 or more claims each, at $212 in total drug cost. In 2023, CMS named 48 claims across 3 drugs.
Dr. Zimmerman's Part D claims by kind of drug, 2024
- Generic161 claims88%
- Brand-name23 claims13%
Dr. Zimmerman'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. Zimmerman's Part D claims, 2024
- Antibiotics26%48 of 184 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: 482024: 48No change
Drugs named by CMS: 3 in 2024, 3 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. Robert J. Zimmerman scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Zimmerman for performance year 2024, reported as part of a group. Dr. Zimmerman accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Zimmerman's MIPS scores, performance year 2024
- 84of 100Final score
- 79.6of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Robert J. Zimmerman received $80,232 in industry payments from 2016 to 2024
CMS Open Payments shows 135 general payments to Dr. Zimmerman from 6 drug and device companies from 2016 to 2024. Speaker and faculty fees make up the largest share, 68% of the total. Merck Sharp & Dohme Corporation paid the most, $79,835.
General payments to Dr. Zimmerman by program year, 2016 to 2024
General payments to Dr. Zimmerman by kind, 2016 to 2024
- Speaker and faculty fees$54,94568%
- Travel and lodging$13,01616%
- Consulting fees$10,05013%
- Food and beverage$2,2213%
Companies that paid Dr. Zimmerman the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert J. Zimmerman graduated from University of Texas Medical School at San Antonio
Dr. Zimmerman graduated from University of Texas Medical School at San Antonio in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Robert J. Zimmerman'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)Clinician Public Reporting: Overall MIPS Performance (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. Robert J. Zimmerman
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. Robert J. Zimmerman's NPI number?
Dr. Robert J. Zimmerman's NPI number is 1023093960. It was assigned on December 14, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert J. Zimmerman?
Dr. Robert J. Zimmerman is an emergency medicine physician in Chardon, Ohio. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Robert J. Zimmerman practice?
Dr. Zimmerman practices at 13207 Ravenna Rd, Chardon, OH 44024. Dr. Zimmerman's primary practice is UH Geauga Medical Center - Medical Oncology - HOPD in Chardon, Ohio. Dmand AI also links Dr. Zimmerman to 7 medical groups.
What is Dr. Robert J. Zimmerman's medical license number?
Dr. Zimmerman holds Ohio license 35073086Z.
Which hospitals is Dr. Robert J. Zimmerman affiliated with?
Dr. Zimmerman is affiliated with University Hospitals Geauga Medical Center.
What medical group is Dr. Robert J. Zimmerman part of?
Dr. Zimmerman is linked to Emergency Medicine Associates. Dmand AI links Dr. Zimmerman to 7 more medical groups.
Does Dr. Robert J. Zimmerman accept Medicare?
Yes. CMS data shows Dr. Zimmerman billed Medicare for 713 services in 2024, and Dr. Zimmerman accepts Medicare assignment.
What is Dr. Robert J. Zimmerman's MIPS score?
Dr. Zimmerman's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
How many Medicare patients does Dr. Robert J. Zimmerman see?
CMS counts 440 Medicare patients who saw Dr. Zimmerman in 2024, with an average age of 76.
What services does Dr. Robert J. Zimmerman bill to Medicare?
In 2024, Dr. Zimmerman's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).
Show 4 more questionsShow fewer questions
Where did Dr. Robert J. Zimmerman go to medical school?
Dr. Zimmerman graduated from University of Texas Medical School at San Antonio in 1996.
What drugs does Dr. Robert J. Zimmerman prescribe most?
In 2024 Medicare Part D data, Dr. Zimmerman's most prescribed drugs by claims were Cephalexin, Ondansetron ODT and Prednisone.
Has Dr. Robert J. Zimmerman received payments from drug or device companies?
CMS Open Payments shows $80,232 in general payments to Dr. Zimmerman from 6 companies from 2016 to 2024. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Robert J. Zimmerman been practicing?
Dr. Zimmerman graduated from medical school in 1996, 30 years ago.
Selling to emergency medicine practices?
See emergency medicine physicians in Ohio by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card