Dr. Michael John Kastner, MD
- Medicare services, 2024
- 1,296
- Medicare patients, 2024
- 823
- Part D claims, 2024
- 230
- Hospital affiliations
- 1
- Industry payments
- $128
- Practice address
- 400 W Mineral King Ave, Visalia, CA 93291
- Practice phone
- Call (559) 624-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Kastner'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. Michael John Kastner is an emergency medicine physician in Visalia, California
Dr. Kastner practices at Kaweah Health Medical Center in Visalia, California, part of Kaweah Delta Health Care District.
Dr. Kastner's NPI, 1114489481, was assigned on April 4, 2019. Dr. Kastner graduated from American University of the Caribbean School of Medicine in 2019. Dr. Kastner's California license number on file is A189039.
- NPI
- 1114489481NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042663833
- NPI enumeration date
- April 4, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (559) 624-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael John Kastner practices at Kaweah Health Medical Center in Visalia, California
Dr. Kastner's primary practice is Kaweah Health Medical Center, at 400 W Mineral King Ave, Visalia, CA 93291 in Tulare County. The practice phone is (559) 624-2000.
- Kaweah Health Medical Center400 W Mineral King Ave, Visalia, CA 93291 · Tulare CountyPhone(559) 624-2000
Source: Dmand AI Affiliation Data
Dr. Michael John Kastner is affiliated with 1 site of care and 1 medical group
Dr. Kastner's primary practice is Kaweah Health Medical Center in Visalia, California, part of Kaweah Delta Health Care District. The medical group on file is Vituity.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael John Kastner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kastner practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaweah Health Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Kaweah Delta Health Care District and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Michael John Kastner is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Kastner's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Kastner's licenses on file in 2 states: California and New Jersey.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- New Jersey license
Emergency medicine physicians near Dr. Kastner
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. Michael John Kastner billed Medicare for 1,296 services in 2024
CMS data shows 1,296 Medicare services from Dr. Kastner across 4 procedure codes in 2024, for 823 Medicare patients. Medicare paid $114,093 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Kastner's Medicare services by type, 2024
- Office and hospital visits843
- Tests and treatments453
Dr. Kastner compared with the California median for emergency medicine physicians, 2024
- Dr. Kastner
- California median
- Medicare services
- 1,296vs 2654.9 times
- Medicare patients
- 823vs 2433.4 times
- Part D claims
- 115vs 6285% above
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Kastner'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. Kastner?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kastner and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael John Kastner treated 823 Medicare patients in 2024, average age 74
CMS counts 823 Medicare patients who saw Dr. Kastner in 2024. The largest group is 65 to 74, with 270 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 54% are also on Medicaid. Their average risk score is 2.38, 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. Kastner's median patient age at 46, with 56% women.
Dr. Kastner's Medicare patients by age, 2024
Dr. Kastner's Medicare patients by sex, 2024
- Women47157%
- Men35243%
Chronic conditions among Dr. Kastner's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes53%
- Arthritis49%
- Chronic kidney disease44%
- Ischemic heart disease43%
- Heart failure41%
- Mood disorders39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kastner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael John Kastner wrote 230 Medicare Part D claims in 2024
In 2024, Dr. Kastner wrote 230 Medicare Part D claims for 164 patients. 97% of them were for generic drugs. CMS names the drug for 115 of them, across 5 drugs with 11 or more claims each, at $439 in total drug cost.
Dr. Kastner's Part D claims by kind of drug, 2024
- Generic222 claims97%
- Brand-name and other8 claims3%
Dr. Kastner'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. Kastner's Part D claims, 2024
- Opioids19%43 of 230 claims
- Antibiotics42%96 of 230 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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. Michael John Kastner takes part in Medicare
Dr. Kastner 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. Michael John Kastner received $128 in industry payments from 2024 to 2025
CMS Open Payments shows 2 general payments to Dr. Kastner from 2 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Inari Medical, Inc. paid the most, $101.
General payments to Dr. Kastner by program year, 2024 to 2025
Companies that paid Dr. Kastner the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael John Kastner graduated from American University of the Caribbean School of Medicine
Dr. Kastner graduated from American University of the Caribbean School of Medicine in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Michael John Kastner accepts plans from 1 insurance carrier
Dr. Kastner is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. Michael John Kastner'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 |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Michael John Kastner
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. Michael John Kastner's NPI number?
Dr. Michael John Kastner's NPI number is 1114489481. It was assigned on April 4, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael John Kastner?
Dr. Michael John Kastner is an emergency medicine physician in Visalia, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Michael John Kastner practice?
Dr. Kastner practices at 400 W Mineral King Ave, Visalia, CA 93291. Dr. Kastner's primary practice is Kaweah Health Medical Center in Visalia, California, part of Kaweah Delta Health Care District.
What is Dr. Michael John Kastner's office phone number?
The practice phone on file for Dr. Kastner is (559) 624-2000.
What is Dr. Michael John Kastner's medical license number?
Dr. Kastner's California license number on file is A189039, one of the licenses on file in 2 states.
Which states has Dr. Michael John Kastner been licensed in?
Dmand AI has state licenses on file for Dr. Kastner in California (2023 to 2025) and New Jersey (2020 to 2024).
Which hospitals is Dr. Michael John Kastner affiliated with?
Dr. Kastner practices at Kaweah Health Medical Center in Visalia, California.
What medical group is Dr. Michael John Kastner part of?
Dr. Kastner is linked to Vituity.
Does Dr. Michael John Kastner accept Medicare?
Yes. CMS data shows Dr. Kastner billed Medicare for 1,296 services in 2024, and Dr. Kastner accepts Medicare assignment.
How many Medicare patients does Dr. Michael John Kastner see?
CMS counts 823 Medicare patients who saw Dr. Kastner in 2024, with an average age of 74.
Show 6 more questionsShow fewer questions
What services does Dr. Michael John Kastner bill to Medicare?
In 2024, Dr. Kastner's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and critical care (99291).
Where did Dr. Michael John Kastner go to medical school?
Dr. Kastner graduated from American University of the Caribbean School of Medicine in 2019.
What drugs does Dr. Michael John Kastner prescribe most?
In 2024 Medicare Part D data, Dr. Kastner's most prescribed drugs by claims were Cephalexin, Hydrocodone-Acetaminophen and Prednisone.
Has Dr. Michael John Kastner received payments from drug or device companies?
CMS Open Payments shows $128 in general payments to Dr. Kastner from 2 companies from 2024 to 2025. The largest total came from Inari Medical, Inc.
How long has Dr. Michael John Kastner been practicing?
Dr. Kastner graduated from medical school in 2019, 7 years ago.
What insurance does Dr. Michael John Kastner accept?
Dr. Kastner is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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