Dr. Michael Joseph Klein, MD
- Medicare services, 2019
- 27
- Medicare patients, 2024
- 29
- Hospital affiliations
- 3
- Industry payments
- $17,155
- Medical groups
- 6
- Practice address
- 24 Hospital Ave, Danbury, CT 06810
- Practice phone
- Call (203) 739-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Michael Joseph Klein is a general surgeon in Danbury, Connecticut
Dr. Klein practices at Northwell Danbury Hospital in Danbury, Connecticut, part of Northwell Health.
Dr. Klein's NPI, 1215222948, was assigned on June 10, 2011. Dr. Klein graduated from Rutgers New Jersey Medical School in 2011. Dr. Klein holds New York license 288894.
- NPI
- 1215222948NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8325319346
- NPI enumeration date
- June 10, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 739-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael Joseph Klein practices at Northwell Danbury Hospital in Danbury, Connecticut
Dr. Klein's primary practice is Northwell Danbury Hospital, at 24 Hospital Ave, Danbury, CT 06810 in Fairfield County. The practice phone is (203) 739-7000.
- Northwell Danbury Hospital24 Hospital Ave, Danbury, CT 06810 · Fairfield CountyPhone(203) 739-7000
Source: Dmand AI Affiliation Data
Dr. Michael Joseph Klein is affiliated with 4 sites of care and 6 medical groups
Dr. Klein's primary practice is Northwell Danbury Hospital in Danbury, Connecticut, part of Northwell Health. Dr. Klein is also affiliated with NYC Health + Hospitals/Bellevue. The medical group on file is Danbury Medical Group. Dmand AI also links Dr. Klein to 1 more hospital, 5 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. Michael Joseph Klein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Klein practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwell Danbury Hospital | Available with a free account |
| +3 more sites and 5 medical groups | 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 Northwell Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Michael Joseph Klein is one of 303 general surgeons in Connecticut
Surgery is Dr. Klein's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Klein is licensed in New York.
Specialties and state licenses
- Surgery, New YorkPrimary
General surgeons near Dr. Klein
Counts of general surgeons 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 Joseph Klein billed Medicare for 27 services in 2019
CMS data shows 27 Medicare services from Dr. Klein across 1 procedure code in 2019, for 29 Medicare patients. Medicare paid $5,325 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Klein's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 762019: 2764%
Dr. Klein compared with the Connecticut median for general surgeons, 2019
- Dr. Klein
- Connecticut median
- Medicare services
- 27vs 10975% below
- Medicare patients
- 29vs 9569% below
Medians across 295 general surgeons in Connecticut with Dmand AI profiles that report each measure.
Dr. Klein's most billed Medicare procedure codes, 2019
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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Klein and other general surgeons in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael Joseph Klein treated 29 Medicare patients in 2024, average age 74
CMS counts 29 Medicare patients who saw Dr. Klein in 2024. The largest group is 75 to 84, with 12 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.26, 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. Klein's median patient age at 74, with 59% women.
Dr. Klein's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Klein's Medicare patients by sex, 2024
- Women1759%
- Men1241%
Chronic conditions among Dr. Klein's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis72%
- Anxiety45%
- Heart failure45%
- Mood disorders45%
- Diabetes41%
- Ischemic heart disease41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Klein's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Michael Joseph Klein takes part in Medicare
Dr. Klein accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Michael Joseph Klein received $17,155 in industry payments from 2020 to 2025
CMS Open Payments shows 43 general payments to Dr. Klein from 10 drug and device companies from 2020 to 2025. Honoraria make up the largest share, 67% of the total. Avita Medical Americas, LLC paid the most, $16,560.
General payments to Dr. Klein by program year, 2020 to 2025
General payments to Dr. Klein by kind, 2020 to 2025
- Honoraria$11,50067%
- Consulting fees$2,53015%
- Travel and lodging$2,00312%
- Food and beverage$1,1237%
Companies that paid Dr. Klein the most, 2020 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael Joseph Klein graduated from Rutgers New Jersey Medical School
Dr. Klein graduated from Rutgers New Jersey Medical School in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael Joseph Klein'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) |
| 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) |
| 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. Michael Joseph Klein
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 Joseph Klein's NPI number?
Dr. Michael Joseph Klein's NPI number is 1215222948. It was assigned on June 10, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Joseph Klein?
Dr. Michael Joseph Klein is a general surgeon in Danbury, Connecticut. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Michael Joseph Klein practice?
Dr. Klein practices at 24 Hospital Ave, Danbury, CT 06810. Dr. Klein's primary practice is Northwell Danbury Hospital in Danbury, Connecticut, part of Northwell Health. Dmand AI also links Dr. Klein to 1 hospital, 5 medical groups and 1 group practice or clinic.
What is Dr. Michael Joseph Klein's office phone number?
The practice phone on file for Dr. Klein is (203) 739-7000.
What is Dr. Michael Joseph Klein's medical license number?
Dr. Klein holds New York license 288894.
Which hospitals is Dr. Michael Joseph Klein affiliated with?
Dr. Klein practices at Northwell Danbury Hospital in Danbury, Connecticut. Dr. Klein is also affiliated with NYC Health + Hospitals/Bellevue. Dmand AI links Dr. Klein to 1 more hospital.
What medical group is Dr. Michael Joseph Klein part of?
Dr. Klein is linked to Danbury Medical Group. Dmand AI links Dr. Klein to 5 more medical groups.
Does Dr. Michael Joseph Klein accept Medicare?
Yes. CMS data shows Dr. Klein billed Medicare for 27 services in 2019, and Dr. Klein accepts Medicare assignment.
How many Medicare patients does Dr. Michael Joseph Klein see?
CMS counts 29 Medicare patients who saw Dr. Klein in 2024, with an average age of 74.
What services does Dr. Michael Joseph Klein bill to Medicare?
In 2019, Dr. Klein's most billed Medicare services were critical care (99291).
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Where did Dr. Michael Joseph Klein go to medical school?
Dr. Klein graduated from Rutgers New Jersey Medical School in 2011.
Has Dr. Michael Joseph Klein received payments from drug or device companies?
CMS Open Payments shows $17,155 in general payments to Dr. Klein from 10 companies from 2020 to 2025. The largest total came from Avita Medical Americas, LLC.
How long has Dr. Michael Joseph Klein been practicing?
Dr. Klein graduated from medical school in 2011, 15 years ago.
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