Dr. Robert John Nadler, MD
- Hospital affiliations
- 2
- Industry payments
- $174
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2020
- Practice address
- 730 West Market Street, Lima, OH 45801
- Practice phone
- Call (419) 227-3361
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Nadler'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 John Nadler is a hospitalist in Lima, Ohio
Dr. Nadler practices at Mercy Health - St. Rita's Medical Center in Lima, Ohio, part of Bon Secours Mercy Health.
Dr. Nadler's NPI, 1538788229, was assigned on April 13, 2020. Dr. Nadler holds Ohio license 35.147362.
- NPI
- 1538788229NPI Registry (opens in a new tab)
- NPI enumeration date
- April 13, 2020
- NPI status
- Active
- Practice phone
- (419) 227-3361
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Robert John Nadler practices at Mercy Health - St. Rita's Medical Center in Lima, Ohio
Dr. Nadler's primary practice is Mercy Health - St. Rita's Medical Center, at 730 West Market Street, Lima, OH 45801 in Allen County. The practice phone is (419) 227-3361.
- Mercy Health - St. Rita's Medical Center730 West Market Street, Lima, OH 45801 · Allen CountyPhone(419) 227-3361
Source: Dmand AI Affiliation Data
Dr. Robert John Nadler is affiliated with 2 sites of care and 1 medical group
Dr. Nadler's primary practice is Mercy Health - St. Rita's Medical Center in Lima, Ohio, part of Bon Secours Mercy Health. Dr. Nadler is also affiliated with OhioHealth Grant Medical Center. The medical group on file is Pediatric Academic Association (PAA).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Robert John Nadler's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nadler practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Health - St. Rita's Medical Center | Available with a free account |
| +1 more affiliated site | 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 Bon Secours Mercy Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Robert John Nadler is one of 991 hospitalists in Ohio
Hospitalist is Dr. Nadler's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Nadler is licensed in Ohio.
Specialties and state licenses
- Hospitalist, OhioPrimary
Hospitalists near Dr. Nadler
Counts of hospitalists 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 John Nadler's patients have a median age of 37
Across all payers, Dmand AI patient panel data puts Dr. Nadler's median patient age at 37, with 40% women.
Dr. Nadler's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 37
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. Robert John Nadler received $174 in industry payments from 2023 to 2025
CMS Open Payments shows 7 general payments to Dr. Nadler from 1 drug or device company from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Sumitomo Pharma America, Inc. paid the most, $174.
General payments to Dr. Nadler by program year, 2023 to 2025
Companies that paid Dr. Nadler the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Robert John Nadler'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 John Nadler
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 John Nadler's NPI number?
Dr. Robert John Nadler's NPI number is 1538788229. It was assigned on April 13, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert John Nadler?
Dr. Robert John Nadler is a hospitalist in Lima, Ohio. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Robert John Nadler practice?
Dr. Nadler practices at 730 West Market Street, Lima, OH 45801. Dr. Nadler's primary practice is Mercy Health - St. Rita's Medical Center in Lima, Ohio, part of Bon Secours Mercy Health.
What is Dr. Robert John Nadler's office phone number?
The practice phone on file for Dr. Nadler is (419) 227-3361.
What is Dr. Robert John Nadler's medical license number?
Dr. Nadler holds Ohio license 35.147362.
Which hospitals is Dr. Robert John Nadler affiliated with?
Dr. Nadler practices at Mercy Health - St. Rita's Medical Center in Lima, Ohio. Dr. Nadler is also affiliated with OhioHealth Grant Medical Center.
What medical group is Dr. Robert John Nadler part of?
Dr. Nadler is linked to Pediatric Academic Association (PAA).
Has Dr. Robert John Nadler received payments from drug or device companies?
CMS Open Payments shows $174 in general payments to Dr. Nadler from 1 company from 2023 to 2025. The largest total came from Sumitomo Pharma America, Inc.
How long has Dr. Robert John Nadler been practicing?
Dr. Nadler's NPI was assigned in 2020.
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