Dr. Cynthia M. Niendorff, MD
- Medicare services, 2023
- 24
- Medicare patients, 2024
- 11
- Part D claims, 2024
- 15
- Hospital affiliations
- 3
- Industry payments
- $3,022
- Practice address
- 2333 McCallie Ave, Chattanooga, TN 37404
- Practice phone
- Call (423) 894-4220
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Niendorff'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. Cynthia M. Niendorff is an anesthesiologist in Chattanooga, Tennessee
Dr. Niendorff practices at Parkridge Medical Center in Chattanooga, Tennessee, part of HCA Healthcare.
Dr. Niendorff's NPI, 1154374049, was assigned on May 19, 2006. Dr. Niendorff holds Tennessee license 49391.
- NPI
- 1154374049NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1951388123
- NPI enumeration date
- May 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (423) 894-4220
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Cynthia M. Niendorff practices at Parkridge Medical Center in Chattanooga, Tennessee
Dr. Niendorff's primary practice is Parkridge Medical Center, at 2333 McCallie Ave, Chattanooga, TN 37404 in Hamilton County. The practice phone is (423) 894-4220.
- Parkridge Medical Center2333 McCallie Ave, Chattanooga, TN 37404 · Hamilton CountyPhone(423) 894-4220
Source: Dmand AI Affiliation Data
Dr. Cynthia M. Niendorff is affiliated with 4 sites of care and 5 medical groups
Dr. Niendorff's primary practice is Parkridge Medical Center in Chattanooga, Tennessee, part of HCA Healthcare. Dr. Niendorff is also affiliated with Mayo Clinic Health System in Eau Claire. The medical group on file is Anesthesia Medical Alliance. Dmand AI also links Dr. Niendorff to 1 more hospital, 4 medical groups and 1 group practice or clinic, 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. Cynthia M. Niendorff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Niendorff practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Parkridge Medical Center | Available with a free account |
| +3 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Cynthia M. Niendorff is one of 734 anesthesiologists in Tennessee
Anesthesiology is Dr. Niendorff's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Niendorff is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Niendorff's licenses on file in 2 states: Tennessee and Wisconsin.
Specialties and state licenses
- Anesthesiology, TennesseePrimary
- Wisconsin license
Anesthesiologists near Dr. Niendorff
Counts of anesthesiologists 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. Cynthia M. Niendorff billed Medicare for 24 services in 2023
CMS data shows 24 Medicare services from Dr. Niendorff across 2 procedure codes in 2023, for 11 Medicare patients. Medicare paid $1,641 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Niendorff's Medicare services by type, 2019 to 2023
- 2019
- 2023
- Anesthesia
- 2019: 02023: 24
- Drugs given in the office
- 2019: 30,1172023: 0100%
- Imaging
- 2019: 1332023: 0100%
- Lab and pathology
- 2019: 2342023: 0100%
- Surgery
- 2019: 3432023: 0100%
- Office and hospital visits
- 2019: 1752023: 0100%
Dr. Niendorff compared with the Tennessee median for anesthesiologists, 2023
- Dr. Niendorff
- Tennessee median
- Medicare services
- 24vs 8371% below
- Medicare patients
- 11vs 14793% below
- Part D claims
- 413vs 2417.2 times
Medians across 729 anesthesiologists in Tennessee with Dmand AI profiles that report each measure.
Dr. Niendorff's most billed Medicare procedure codes, 2023
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. Niendorff?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Niendorff and other anesthesiologists in Tennessee.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Cynthia M. Niendorff treated 11 Medicare patients in 2024, average age 74
CMS counts 11 Medicare patients who saw Dr. Niendorff in 2024. Their average risk score is 1.24, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Niendorff's median patient age at 62, with 52% women.
Dr. Niendorff's 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
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Cynthia M. Niendorff wrote 15 Medicare Part D claims in 2024
In 2024, Dr. Niendorff wrote 15 Medicare Part D claims. 100% of them were for generic drugs. They cover 11 drugs, with $18,928 in total drug cost. In 2018, CMS named 460 claims across 7 drugs.
Dr. Niendorff's most prescribed drugs by claims, 2019
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, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 4602019: 41310%
Drugs named by CMS: 11 in 2019, 7 in 2018.
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. Cynthia M. Niendorff takes part in Medicare
Dr. Niendorff 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. Cynthia M. Niendorff received $3,022 in industry payments from 2016 to 2024
CMS Open Payments shows 192 general payments to Dr. Niendorff from 28 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 93% of the total. kaleo, Inc. paid the most, $345.
General payments to Dr. Niendorff by program year, 2016 to 2024
General payments to Dr. Niendorff by kind, 2016 to 2024
- Food and beverage$2,82293%
- Education$2007%
Companies that paid Dr. Niendorff 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. Cynthia M. Niendorff is board certified in anesthesiology
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Sources for Dr. Cynthia M. Niendorff'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. Cynthia M. Niendorff
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. Cynthia M. Niendorff's NPI number?
Dr. Cynthia M. Niendorff's NPI number is 1154374049. It was assigned on May 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Cynthia M. Niendorff?
Dr. Cynthia M. Niendorff is an anesthesiologist in Chattanooga, Tennessee. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Cynthia M. Niendorff practice?
Dr. Niendorff practices at 2333 McCallie Ave, Chattanooga, TN 37404. Dr. Niendorff's primary practice is Parkridge Medical Center in Chattanooga, Tennessee, part of HCA Healthcare. Dmand AI also links Dr. Niendorff to 1 hospital, 4 medical groups and 1 group practice or clinic.
What is Dr. Cynthia M. Niendorff's office phone number?
The practice phone on file for Dr. Niendorff is (423) 894-4220.
What is Dr. Cynthia M. Niendorff's medical license number?
Dr. Niendorff holds Tennessee license 49391, one of the licenses on file in 2 states.
Which states has Dr. Cynthia M. Niendorff been licensed in?
Dmand AI has state licenses on file for Dr. Niendorff in Tennessee and Wisconsin.
Which hospitals is Dr. Cynthia M. Niendorff affiliated with?
Dr. Niendorff practices at Parkridge Medical Center in Chattanooga, Tennessee. Dr. Niendorff is also affiliated with Mayo Clinic Health System in Eau Claire. Dmand AI links Dr. Niendorff to 1 more hospital.
What medical group is Dr. Cynthia M. Niendorff part of?
Dr. Niendorff is linked to Anesthesia Medical Alliance. Dmand AI links Dr. Niendorff to 4 more medical groups.
Does Dr. Cynthia M. Niendorff accept Medicare?
Yes. CMS data shows Dr. Niendorff billed Medicare for 24 services in 2023, and Dr. Niendorff accepts Medicare assignment.
How many Medicare patients does Dr. Cynthia M. Niendorff see?
CMS counts 11 Medicare patients who saw Dr. Niendorff in 2024, with an average age of 74.
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Is Dr. Cynthia M. Niendorff board certified?
Yes. Dr. Niendorff is board certified in anesthesiology by the American Board of Anesthesiology.
What services does Dr. Cynthia M. Niendorff bill to Medicare?
In 2023, Dr. Niendorff's most billed Medicare services were anesthesia (00160) and anesthesia (00811).
What drugs does Dr. Cynthia M. Niendorff prescribe most?
In 2019 Medicare Part D data, Dr. Niendorff's most prescribed drugs by claims were Oxycodone HCl, Hydrocodone-Acetaminophen and Oxycodone-Acetaminophen.
Has Dr. Cynthia M. Niendorff received payments from drug or device companies?
CMS Open Payments shows $3,022 in general payments to Dr. Niendorff from 28 companies from 2016 to 2024. The largest total came from kaleo, Inc.
How long has Dr. Cynthia M. Niendorff been practicing?
Dr. Niendorff graduated from medical school in 2000, 26 years ago.
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