Dr. Courtenay L. Diehl, MD
- Medicare services, 2020
- 15
- Part D claims, 2024
- 58
- MIPS score, 2024
- 97
- Hospital affiliations
- 1
- Industry payments
- $223
- Practice address
- 127 North Street, Batavia, NY 14020
- Practice phone
- Call (585) 343-6030
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Diehl's professional email, personal email and mobile number
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Dr. Courtenay L. Diehl is an obstetrics physician in Batavia, New York
Dr. Diehl practices at United Memorial Medical Center in Batavia, New York, part of Rochester Regional Health.
Dr. Diehl's NPI, 1306858188, was assigned on August 12, 2006. Dr. Diehl graduated from Southern Illinois University School of Medicine in 2005. Dr. Diehl holds New York license 253736-1.
- NPI
- 1306858188NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618971250
- NPI enumeration date
- August 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (585) 343-6030
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Courtenay L. Diehl practices at United Memorial Medical Center in Batavia, New York
Dr. Diehl's primary practice is United Memorial Medical Center, at 127 North Street, Batavia, NY 14020 in Genesee County. The practice phone is (585) 343-6030.
- United Memorial Medical Center127 North Street, Batavia, NY 14020 · Genesee CountyPhone(585) 343-6030
Source: Dmand AI Affiliation Data
Dr. Courtenay L. Diehl is affiliated with 2 sites of care and 1 medical group
Dr. Diehl's primary practice is United Memorial Medical Center in Batavia, New York, part of Rochester Regional Health. The medical group on file is United Memorial Medical Center. Dmand AI also links Dr. Diehl to 1 more group practice or clinic, named with a free account. Dr. Diehl's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Courtenay L. Diehl's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Diehl practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| United Memorial Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Courtenay L. Diehl is one of 82 obstetrics physicians in New York
Obstetrics is Dr. Diehl's primary specialty in the NPI Registry, under taxonomy code 207VX0000X. Dmand AI has Dr. Diehl's licenses on file in 2 states: New York and Minnesota.
Specialties and state licenses
- Obstetrics, New YorkPrimary
- Minnesota license
Obstetrics physicians near Dr. Diehl
Counts of obstetrics 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. Courtenay L. Diehl billed Medicare for 15 services in 2020
CMS data shows 15 Medicare services from Dr. Diehl across 1 procedure code in 2020. Medicare paid $423 for them. Every service was in an office.
Dr. Diehl's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Other services
- 2019: 232020: 1535%
Dr. Diehl compared with the New York median for obstetrics physicians, 2020
- Dr. Diehl
- New York median
- Medicare services
- 15vs 9284% below
- Part D claims
- 18vs 4661% below
Medians across 68 obstetrics physicians in New York with Dmand AI profiles that report each measure.
Dr. Diehl's most billed Medicare procedure codes, 2020
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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Courtenay L. Diehl's patients have a median age of 35
Across all payers, Dmand AI patient panel data puts Dr. Diehl's median patient age at 35, with 99% women.
Dr. Diehl's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 35
Patient panel by sex, all payers
- Women99%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Courtenay L. Diehl wrote 58 Medicare Part D claims in 2024
In 2024, Dr. Diehl wrote 58 Medicare Part D claims for 31 patients. 90% of them were for generic drugs. CMS names the drug for 18 of them, across 1 drug with 11 or more claims each, at $1,335 in total drug cost. In 2021, CMS named 35 claims across 3 drugs.
Dr. Diehl's Part D claims by kind of drug, 2024
- Generic52 claims90%
- Brand-name and other6 claims10%
Dr. Diehl'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.
Part D claims for drugs CMS names, 2021 to 2024
- 2021
- 2024
- Claims for drugs CMS names
- 2021: 352024: 1849%
Drugs named by CMS: 1 in 2024, 3 in 2021.
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. Courtenay L. Diehl scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. Diehl for performance year 2024, reported through an alternative payment model (APM). Dr. Diehl accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Diehl's MIPS scores, performance year 2024
- 97of 100Final score
- 74.5of 100Quality
- 100of 100Promoting Interoperability
- 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
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Dr. Courtenay L. Diehl received $223 in industry payments from 2016 to 2019
CMS Open Payments shows 13 general payments to Dr. Diehl from 6 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 89% of the total. Roche Diagnostics Corporation paid the most, $110.
General payments to Dr. Diehl by program year, 2016 to 2019
General payments to Dr. Diehl by kind, 2016 to 2019
- Food and beverage$19889%
- Education$2411%
Companies that paid Dr. Diehl the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Courtenay L. Diehl graduated from Southern Illinois University School of Medicine
Dr. Diehl graduated from Southern Illinois University School of Medicine in 2005.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Courtenay L. Diehl'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 Data |
| 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. Courtenay L. Diehl
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. Courtenay L. Diehl's NPI number?
Dr. Courtenay L. Diehl's NPI number is 1306858188. It was assigned on August 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Courtenay L. Diehl?
Dr. Courtenay L. Diehl is an obstetrics physician in Batavia, New York. The primary specialty in the NPI Registry is Obstetrics Physician (taxonomy code 207VX0000X).
Where does Dr. Courtenay L. Diehl practice?
Dr. Diehl practices at 127 North Street, Batavia, NY 14020. Dr. Diehl's primary practice is United Memorial Medical Center in Batavia, New York, part of Rochester Regional Health. Dmand AI also links Dr. Diehl to 1 group practice or clinic.
What is Dr. Courtenay L. Diehl's office phone number?
The practice phone on file for Dr. Diehl is (585) 343-6030.
What is Dr. Courtenay L. Diehl's medical license number?
Dr. Diehl holds New York license 253736-1, one of the licenses on file in 2 states.
Which states has Dr. Courtenay L. Diehl been licensed in?
Dmand AI has state licenses on file for Dr. Diehl in New York and Minnesota.
Which hospitals is Dr. Courtenay L. Diehl affiliated with?
Dr. Diehl practices at United Memorial Medical Center in Batavia, New York.
What medical group is Dr. Courtenay L. Diehl part of?
Dr. Diehl is linked to United Memorial Medical Center.
Does Dr. Courtenay L. Diehl accept Medicare?
Yes. CMS data shows Dr. Diehl billed Medicare for 15 services in 2020, and Dr. Diehl accepts Medicare assignment.
What is Dr. Courtenay L. Diehl's MIPS score?
Dr. Diehl's MIPS final score for performance year 2024 is 97 out of 100, reported through an alternative payment model (APM).
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What services does Dr. Courtenay L. Diehl bill to Medicare?
In 2020, Dr. Diehl's most billed Medicare services were medicare service (G0101).
Where did Dr. Courtenay L. Diehl go to medical school?
Dr. Diehl graduated from Southern Illinois University School of Medicine in 2005.
What drugs does Dr. Courtenay L. Diehl prescribe most?
In 2024 Medicare Part D data, Dr. Diehl's most prescribed drugs by claims were Estradiol.
Has Dr. Courtenay L. Diehl received payments from drug or device companies?
CMS Open Payments shows $223 in general payments to Dr. Diehl from 6 companies from 2016 to 2019. The largest total came from Roche Diagnostics Corporation.
How long has Dr. Courtenay L. Diehl been practicing?
Dr. Diehl graduated from medical school in 2005, 21 years ago.
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