World J Otorhinolaryngol Head Neck Surg
Dr. Chad Charles Zatezalo, MD
NPI1861603524PAC ID4183818321
- Medicare services, 2024
- 487
- Medicare patients, 2024
- 195
- Part D claims, 2024
- 204
- Publications
- 5
- Clinical trials
- 1
- Practice address
- 46 West Gude Drive, Rockville, MD 20850
- Practice phone
- Call (301) 762-8205
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Montgomery Surgery Center - Rockville
Surgery Center - Medicare-Certified · Rockville, Maryland
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Dr. Chad Charles Zatezalo is an ophthalmologist in Rockville, Maryland
Dr. Zatezalo practices at Montgomery Surgery Center - Rockville in Rockville, Maryland.
Dr. Zatezalo's NPI, 1861603524, was assigned on May 24, 2007. Dr. Zatezalo graduated from Icahn School of Medicine at Mount Sinai in 2006. Dr. Zatezalo holds Maryland license D74823.
NPI and contact details
- NPI
- 1861603524NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4183818321
- NPI enumeration date
- May 24, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (301) 762-8205
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chad Charles Zatezalo practices at Montgomery Surgery Center - Rockville in Rockville, Maryland
Dr. Zatezalo's primary practice is Montgomery Surgery Center - Rockville, at 46 West Gude Drive, Rockville, MD 20850. The practice phone is (301) 762-8205.
- Montgomery Surgery Center - Rockville46 West Gude Drive, Rockville, MD 20850Phone(301) 762-8205
Source: Dmand AI Affiliation Data
Dr. Chad Charles Zatezalo is affiliated with 2 sites of care
Dr. Zatezalo's primary practice is Montgomery Surgery Center - Rockville in Rockville, Maryland. Dmand AI also links Dr. Zatezalo to 1 physician office, named with a free account.
Montgomery Surgery Center - RockvillePrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Chad Charles Zatezalo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zatezalo practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Montgomery Surgery Center - Rockville | 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. Chad Charles Zatezalo is one of 471 ophthalmologists in Maryland
Ophthalmology is Dr. Zatezalo's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dmand AI has Dr. Zatezalo's licenses on file in 2 states: Maryland and Pennsylvania.
Specialties and state licenses
- Ophthalmology, MarylandPrimary
- Pennsylvania license
Ophthalmologists near Dr. Zatezalo
Counts of ophthalmologists 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. Chad Charles Zatezalo billed Medicare for 487 services in 2024
CMS data shows 487 Medicare services from Dr. Zatezalo across 10 procedure codes in 2024, for 195 Medicare patients. Medicare paid $63,611 for them.
Medicare services, 2024487
Medicare patients195
Paid by Medicare$63,611
Procedure codes10
Dr. Zatezalo's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 4912024: 41715%
- Surgery
- 2023: 642024: 709%
Where Dr. Zatezalo's Medicare services took place, 2024
- In an office43790%
- In a facility5010%
Dr. Zatezalo compared with the Maryland median for ophthalmologists, 2024
- Dr. Zatezalo
- Maryland median
- Medicare services
- 487vs 1,38865% below
- Medicare patients
- 195vs 62369% below
- Part D claims
- 162vs 38057% below
Medians across 487 ophthalmologists in Maryland with Dmand AI profiles that report each measure.
Dr. Zatezalo'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chad Charles Zatezalo treated 195 Medicare patients in 2024, average age 74
CMS counts 195 Medicare patients who saw Dr. Zatezalo in 2024. The largest group is 65 to 74, with 104 patients. 74% of them have high cholesterol, and 60% have high blood pressure. Their average risk score is 0.84, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Zatezalo's median patient age at 68, with 68% women.
Medicare patients, 2024195
Average age74
Average risk score0.84
Dr. Zatezalo's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Zatezalo's Medicare patients by sex, 2024
- Women13770%
- Men5830%
Chronic conditions among Dr. Zatezalo's Medicare patients, 2024
- High cholesterol74%
- High blood pressure60%
- Arthritis47%
- Osteoporosis27%
- Mood disorders23%
- Anxiety21%
- Ischemic heart disease21%
- Depression19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zatezalo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women68%
- Men31%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Chad Charles Zatezalo wrote 204 Medicare Part D claims in 2024
In 2024, Dr. Zatezalo wrote 204 Medicare Part D claims for 66 patients. 90% of them were for generic drugs. CMS names the drug for 162 of them, across 5 drugs with 11 or more claims each, at $1,198 in total drug cost. In 2023, CMS named 111 claims across 4 drugs.
Part D claims, 2024204
Drugs named by CMS5
Total drug cost$1,198
Part D patients66
Dr. Zatezalo's Part D claims by kind of drug, 2024
- Generic184 claims90%
- Brand-name20 claims10%
Dr. Zatezalo'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. Zatezalo's Part D claims, 2024
- Opioids9%18 of 204 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: 1112024: 16246%
Drugs named by CMS: 5 in 2024, 4 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. Chad Charles Zatezalo ranks in the 64th percentile for melanoma (skin cancer) excision in Medicare
Dr. Zatezalo accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 11 procedures of melanoma (skin cancer) excision by Dr. Zatezalo, more than 64% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Zatezalo ranks in Medicare procedure volume
- Melanoma (skin cancer) excision
- 64th percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Chad Charles Zatezalo has 5 publications on record
Dmand AI links 5 papers to Dr. Zatezalo, published from 2015 to 2020. The most frequent topics are Nerve Block, Conjunctiva and Pain. Dr. Zatezalo has published most often in Ophthalmic Plast Reconstr Surg. Dr. Zatezalo's most frequent co-authors are Wendy W. Lee, MD, Apostolos Anagnostopoulos, MD and Marcus Juen Yue Ko, MD.
Papers5
Years published2015 to 2020
Topics Dr. Zatezalo writes about most
- Nerve Block
- Conjunctiva
- Pain
- Pain, Postoperative
Dr. Zatezalo's most frequent co-authors
- Wendy W. Lee, MD4 shared papers
- Apostolos Anagnostopoulos, MD3 shared papers
- Marcus Juen Yue Ko, MD3 shared papers
Recent publications by Dr. Zatezalo
DacryocystorhinostomyEyelidsLacrimal Apparatus
Ophthalmic Plast Reconstr Surg
AnesthesiaAnestheticsBlepharoplasty
Ophthalmic Plast Reconstr Surg
Anesthetics, LocalConjunctivaNerve Block
Ophthalmic Plast Reconstr Surg
ConjunctivaNerve BlockPain
See who Dr. Zatezalo researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Zatezalo works with, so you can find a warm path to the right ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Chad Charles Zatezalo has worked on 1 clinical trial
Dmand AI links Dr. Zatezalo to 1 clinical trial. Conditions studied include Blepharoptosis and Eyelid Diseases.
Conditions in Dr. Zatezalo's trials
- Blepharoptosis
- Eyelid Diseases
Investigators on the most trials with Dr. Zatezalo
Recent clinical trials with Dr. Zatezalo
BlepharoptosisEyelid Diseases
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Chad Charles Zatezalo received $1,369 in industry payments from 2016 to 2025
CMS Open Payments shows 29 general payments to Dr. Zatezalo from 9 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 96% of the total. Galderma Laboratories, L.P. paid the most, $584.
General payments to Dr. Zatezalo by program year, 2016 to 2025
General payments to Dr. Zatezalo by kind, 2016 to 2025
$1.4Kin total
- Food and beverage$1,30996%
- Entertainment$604%
Companies that paid Dr. Zatezalo the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chad Charles Zatezalo graduated from Icahn School of Medicine at Mount Sinai
Dr. Zatezalo graduated from Icahn School of Medicine at Mount Sinai in 2006.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Chad Charles Zatezalo'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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. Chad Charles Zatezalo
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. Chad Charles Zatezalo's NPI number?
Dr. Chad Charles Zatezalo's NPI number is 1861603524. It was assigned on May 24, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Chad Charles Zatezalo?
Dr. Chad Charles Zatezalo is an ophthalmologist in Rockville, Maryland. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Chad Charles Zatezalo practice?
Dr. Zatezalo practices at 46 West Gude Drive, Rockville, MD 20850. Dr. Zatezalo's primary practice is Montgomery Surgery Center - Rockville in Rockville, Maryland. Dmand AI also links Dr. Zatezalo to 1 physician office.
What is Dr. Chad Charles Zatezalo's office phone number?
The practice phone on file for Dr. Zatezalo is (301) 762-8205.
What is Dr. Chad Charles Zatezalo's medical license number?
Dr. Zatezalo holds Maryland license D74823, one of the licenses on file in 2 states.
Which states has Dr. Chad Charles Zatezalo been licensed in?
Dmand AI has state licenses on file for Dr. Zatezalo in Maryland and Pennsylvania.
Does Dr. Chad Charles Zatezalo accept Medicare?
Yes. CMS data shows Dr. Zatezalo billed Medicare for 487 services in 2024, and Dr. Zatezalo accepts Medicare assignment.
How many Medicare patients does Dr. Chad Charles Zatezalo see?
CMS counts 195 Medicare patients who saw Dr. Zatezalo in 2024, with an average age of 74.
What services does Dr. Chad Charles Zatezalo bill to Medicare?
In 2024, Dr. Zatezalo's most billed Medicare services were eye exam or test (92285), eye exam or test (92004) and eye exam or test (92014).
Where did Dr. Chad Charles Zatezalo go to medical school?
Dr. Zatezalo graduated from Icahn School of Medicine at Mount Sinai in 2006.
Show 5 more questionsShow fewer questions
What drugs does Dr. Chad Charles Zatezalo prescribe most?
In 2024 Medicare Part D data, Dr. Zatezalo's most prescribed drugs by claims were Erythromycin, Ondansetron ODT and Neomycin-Polymyxin-Dexameth.
Has Dr. Chad Charles Zatezalo received payments from drug or device companies?
CMS Open Payments shows $1,369 in general payments to Dr. Zatezalo from 9 companies from 2016 to 2025. The largest total came from Galderma Laboratories, L.P.
How long has Dr. Chad Charles Zatezalo been practicing?
Dr. Zatezalo graduated from medical school in 2006, 20 years ago.
Does Dr. Chad Charles Zatezalo do research?
Dmand AI links 5 publications to Dr. Zatezalo, published from 2015 to 2020. Dr. Zatezalo has worked on 1 clinical trial.
Who does Dr. Chad Charles Zatezalo publish with?
Dr. Zatezalo's most frequent co-authors are Wendy W. Lee, MD (4 shared papers), Apostolos Anagnostopoulos, MD (3 shared papers) and Marcus Juen Yue Ko, MD (3 shared papers).
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