Dr. Theodore H. Niemann, MD
- Medicare services, 2024
- 1,385
- Medicare patients, 2024
- 540
- Hospital affiliations
- 5
- Industry payments
- $20
- Medical groups
- 2
- Practice address
- 5300 N. Meadows Dr., Grove City, OH 43123
- Practice phone
- Call (614) 234-7400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mount Carmel Women's Health Center Grove City
Mammography / Breast Imaging Center · Grove City, Ohio
Find Dr. Niemann's professional email, personal email and mobile number
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Dr. Theodore H. Niemann is a pathologist in Grove City, Ohio
Dr. Niemann practices at Mount Carmel Women's Health Center Grove City in Grove City, Ohio.
Dr. Niemann's NPI, 1770577694, was assigned on September 7, 2005. Dr. Niemann graduated from Southern Illinois University School of Medicine in 1988. Dr. Niemann holds Ohio license 35066598.
- NPI
- 1770577694NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618872995
- NPI enumeration date
- September 7, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (614) 234-7400
- 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. Theodore H. Niemann practices at Mount Carmel Women's Health Center Grove City in Grove City, Ohio
Dr. Niemann's primary practice is Mount Carmel Women's Health Center Grove City, at 5300 N. Meadows Dr., Grove City, OH 43123. The practice phone is (614) 234-7400.
- Mount Carmel Women's Health Center Grove City5300 N. Meadows Dr., Grove City, OH 43123Phone(614) 234-7400
Source: Dmand AI Affiliation Data
Dr. Theodore H. Niemann is affiliated with 8 sites of care and 2 medical groups
Dr. Niemann's primary practice is Mount Carmel Women's Health Center Grove City in Grove City, Ohio. Dr. Niemann is also affiliated with OhioHealth Grant Medical Center. The medical group on file is Central Ohio Pathology Associates. Dmand AI also links Dr. Niemann to 4 more hospitals, 2 group practices and clinics and 1 medical group, 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. Theodore H. Niemann's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Niemann practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mount Carmel Women's Health Center Grove City | Available with a free account |
| +7 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Theodore H. Niemann is one of 525 pathologists in Ohio
Anatomic pathology and clinical pathology is Dr. Niemann's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Niemann is licensed in Ohio.
Specialties and state licenses
- Anatomic pathology and clinical pathology, OhioPrimary
Pathologists near Dr. Niemann
Counts of pathologists 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. Theodore H. Niemann billed Medicare for 1,385 services in 2024
CMS data shows 1,385 Medicare services from Dr. Niemann across 13 procedure codes in 2024, for 540 Medicare patients. Medicare paid $38,079 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Niemann's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 1,5952024: 1,38513%
Dr. Niemann compared with the Ohio median for pathologists, 2024
- Dr. Niemann
- Ohio median
- Medicare services
- 1,385vs 1,18517% above
- Medicare patients
- 540vs 5037% above
Medians across 571 pathologists in Ohio with Dmand AI profiles that report each measure.
Dr. Niemann'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Niemann and other pathologists in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Theodore H. Niemann treated 540 Medicare patients in 2024, average age 73
CMS counts 540 Medicare patients who saw Dr. Niemann in 2024. The largest group is 65 to 74, with 275 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.54, 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. Niemann's median patient age at 60, with 60% women.
Dr. Niemann's Medicare patients by age, 2024
Dr. Niemann's Medicare patients by sex, 2024
- Women28653%
- Men25447%
Chronic conditions among Dr. Niemann's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Diabetes40%
- Cancer36%
- Ischemic heart disease36%
- Chronic kidney disease32%
- Anxiety29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Niemann's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Theodore H. Niemann takes part in Medicare
Dr. Niemann 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. Theodore H. Niemann received $20 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Niemann from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Roche Diagnostics Corporation paid the most, $20.
Companies that paid Dr. Niemann 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. Theodore H. Niemann graduated from Southern Illinois University School of Medicine
Dr. Niemann graduated from Southern Illinois University School of Medicine in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Theodore H. Niemann'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) |
| 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. Theodore H. Niemann
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. Theodore H. Niemann's NPI number?
Dr. Theodore H. Niemann's NPI number is 1770577694. It was assigned on September 7, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Theodore H. Niemann?
Dr. Theodore H. Niemann is a pathologist in Grove City, Ohio. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. Theodore H. Niemann practice?
Dr. Niemann practices at 5300 N. Meadows Dr., Grove City, OH 43123. Dr. Niemann's primary practice is Mount Carmel Women's Health Center Grove City in Grove City, Ohio. Dmand AI also links Dr. Niemann to 4 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. Theodore H. Niemann's office phone number?
The practice phone on file for Dr. Niemann is (614) 234-7400.
What is Dr. Theodore H. Niemann's medical license number?
Dr. Niemann holds Ohio license 35066598.
Which hospitals is Dr. Theodore H. Niemann affiliated with?
Dr. Niemann is affiliated with OhioHealth Grant Medical Center. Dmand AI links Dr. Niemann to 4 more hospitals.
What medical group is Dr. Theodore H. Niemann part of?
Dr. Niemann is linked to Central Ohio Pathology Associates. Dmand AI links Dr. Niemann to 1 more medical group.
Does Dr. Theodore H. Niemann accept Medicare?
Yes. CMS data shows Dr. Niemann billed Medicare for 1,385 services in 2024, and Dr. Niemann accepts Medicare assignment.
How many Medicare patients does Dr. Theodore H. Niemann see?
CMS counts 540 Medicare patients who saw Dr. Niemann in 2024, with an average age of 73.
What services does Dr. Theodore H. Niemann bill to Medicare?
In 2024, Dr. Niemann's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88341) and lab and pathology test (88307).
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Where did Dr. Theodore H. Niemann go to medical school?
Dr. Niemann graduated from Southern Illinois University School of Medicine in 1988.
Has Dr. Theodore H. Niemann received payments from drug or device companies?
CMS Open Payments shows $20 in general payments to Dr. Niemann from 1 company from 2017 to 2017. The largest total came from Roche Diagnostics Corporation.
How long has Dr. Theodore H. Niemann been practicing?
Dr. Niemann graduated from medical school in 1988, 38 years ago.
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