Dr. John W. Zelahy, MD
- Medicare services, 2024
- 1,144
- Medicare patients, 2024
- 861
- Part D claims, 2024
- 559
- MIPS score, 2024
- 75
- Hospital affiliations
- 2
- Practice address
- 350 7th St N, Naples, FL 34102
- Practice phone
- Call (239) 624-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Zelahy'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. John W. Zelahy is an emergency medicine physician in Naples, Florida
Dr. Zelahy practices at NCH Baker Hospital in Naples, Florida, part of NCH Healthcare System.
Dr. Zelahy's NPI, 1932183696, was assigned on December 5, 2005. Dr. Zelahy graduated from Temple University School of Medicine in 1994. Dr. Zelahy holds Florida license ME82589.
- NPI
- 1932183696NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9234311291
- NPI enumeration date
- December 5, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (239) 624-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John W. Zelahy practices at NCH Baker Hospital in Naples, Florida
Dr. Zelahy's primary practice is NCH Baker Hospital, at 350 7th St N, Naples, FL 34102 in Collier County. The practice phone is (239) 624-5000.
- NCH Baker Hospital350 7th St N, Naples, FL 34102 · Collier CountyPhone(239) 624-5000
Source: Dmand AI Affiliation Data
Dr. John W. Zelahy is affiliated with 2 sites of care and 2 medical groups
Dr. Zelahy's primary practice is NCH Baker Hospital in Naples, Florida, part of NCH Healthcare System. Dr. Zelahy is also affiliated with Physicians Regional Medical Center - Pine Ridge. The medical group on file is Southwest Florida Emergency Management. Dmand AI also links Dr. Zelahy to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John W. Zelahy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zelahy practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| NCH Baker Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. John W. Zelahy is one of 3,847 emergency medicine physicians in Florida
Emergency medicine is Dr. Zelahy's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Zelahy is licensed in Florida.
Specialties and state licenses
- Emergency medicine, FloridaPrimary
Emergency medicine physicians near Dr. Zelahy
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. John W. Zelahy billed Medicare for 1,144 services in 2024
CMS data shows 1,144 Medicare services from Dr. Zelahy across 6 procedure codes in 2024, for 861 Medicare patients. Medicare paid $111,289 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Zelahy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9362024: 8569%
- Tests and treatments
- 2023: 2382024: 28821%
Dr. Zelahy compared with the Florida median for emergency medicine physicians, 2024
- Dr. Zelahy
- Florida median
- Medicare services
- 1,144vs 3083.7 times
- Medicare patients
- 861vs 2773.1 times
- Part D claims
- 354vs 844.2 times
Medians across 3,699 emergency medicine physicians in Florida with Dmand AI profiles that report each measure.
Dr. Zelahy'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. Zelahy?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zelahy and other emergency medicine physicians in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John W. Zelahy treated 861 Medicare patients in 2024, average age 80
CMS counts 861 Medicare patients who saw Dr. Zelahy in 2024. The largest group is 75 to 84, with 331 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.88, 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. Zelahy's median patient age at 65, with 56% women.
Dr. Zelahy's Medicare patients by age, 2024
Dr. Zelahy's Medicare patients by sex, 2024
- Women45252%
- Men40948%
Chronic conditions among Dr. Zelahy's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Ischemic heart disease51%
- Atrial fibrillation41%
- Chronic kidney disease39%
- Anxiety37%
- Mood disorders36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zelahy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John W. Zelahy wrote 559 Medicare Part D claims in 2024
In 2024, Dr. Zelahy wrote 559 Medicare Part D claims for 336 patients. 94% of them were for generic drugs. CMS names the drug for 354 of them, across 9 drugs with 11 or more claims each, at $1,315 in total drug cost. In 2023, CMS named 389 claims across 12 drugs.
Dr. Zelahy's Part D claims by kind of drug, 2024
- Generic523 claims94%
- Brand-name36 claims6%
Dr. Zelahy'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. Zelahy's Part D claims, 2024
- Opioids12%68 of 559 claims
- Antibiotics15%83 of 559 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: 3892024: 3549%
Drugs named by CMS: 9 in 2024, 12 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. John W. Zelahy scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Zelahy for performance year 2024, reported individually. Dr. Zelahy accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. John W. Zelahy received $90 in industry payments from 2022 to 2025
CMS Open Payments shows 5 general payments to Dr. Zelahy from 3 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Chiesi USA, Inc. paid the most, $55.
General payments to Dr. Zelahy by program year, 2022 to 2025
Companies that paid Dr. Zelahy the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John W. Zelahy graduated from Temple University School of Medicine
Dr. Zelahy graduated from Temple University School of Medicine in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John W. Zelahy'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. John W. Zelahy
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. John W. Zelahy's NPI number?
Dr. John W. Zelahy's NPI number is 1932183696. It was assigned on December 5, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John W. Zelahy?
Dr. John W. Zelahy is an emergency medicine physician in Naples, Florida. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. John W. Zelahy practice?
Dr. Zelahy practices at 350 7th St N, Naples, FL 34102. Dr. Zelahy's primary practice is NCH Baker Hospital in Naples, Florida, part of NCH Healthcare System. Dmand AI also links Dr. Zelahy to 1 medical group.
What is Dr. John W. Zelahy's office phone number?
The practice phone on file for Dr. Zelahy is (239) 624-5000.
What is Dr. John W. Zelahy's medical license number?
Dr. Zelahy holds Florida license ME82589.
Which hospitals is Dr. John W. Zelahy affiliated with?
Dr. Zelahy practices at NCH Baker Hospital in Naples, Florida. Dr. Zelahy is also affiliated with Physicians Regional Medical Center - Pine Ridge.
What medical group is Dr. John W. Zelahy part of?
Dr. Zelahy is linked to Southwest Florida Emergency Management. Dmand AI links Dr. Zelahy to 1 more medical group.
Does Dr. John W. Zelahy accept Medicare?
Yes. CMS data shows Dr. Zelahy billed Medicare for 1,144 services in 2024, and Dr. Zelahy accepts Medicare assignment.
What is Dr. John W. Zelahy's MIPS score?
Dr. Zelahy's MIPS final score for performance year 2024 is 75 out of 100, reported individually.
How many Medicare patients does Dr. John W. Zelahy see?
CMS counts 861 Medicare patients who saw Dr. Zelahy in 2024, with an average age of 80.
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What services does Dr. John W. Zelahy bill to Medicare?
In 2024, Dr. Zelahy's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).
Where did Dr. John W. Zelahy go to medical school?
Dr. Zelahy graduated from Temple University School of Medicine in 1994.
What drugs does Dr. John W. Zelahy prescribe most?
In 2024 Medicare Part D data, Dr. Zelahy's most prescribed drugs by claims were Ondansetron HCl, Prednisone and Oxycodone-Acetaminophen.
Has Dr. John W. Zelahy received payments from drug or device companies?
CMS Open Payments shows $90 in general payments to Dr. Zelahy from 3 companies from 2022 to 2025. The largest total came from Chiesi USA, Inc.
How long has Dr. John W. Zelahy been practicing?
Dr. Zelahy graduated from medical school in 1994, 32 years ago.
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