Dr. Marshall Katzen, MD
- Medicare services, 2019
- 649
- Part D claims, 2024
- 24
- Hospital affiliations
- 1
- Industry payments
- $30
- Medical group
- 1
- Practice address
- One Hospital Road, First Fl, Wing 5, PO Box 1477, Oak Bluffs, MA 02557
- Practice phone
- Call (508) 693-0410
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Katzen's professional email, personal email and mobile number
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Dr. Marshall Katzen is an orthopedic surgeon in Oak Bluffs, Massachusetts
Dr. Katzen practices at Martha's Vineyard Hospital in Oak Bluffs, Massachusetts, part of Mass General Brigham.
Dr. Katzen's NPI, 1326140682, was assigned on September 5, 2006. Dr. Katzen graduated from Tufts University School of Medicine in 1972. Dr. Katzen holds Massachusetts license 43593.
- NPI
- 1326140682NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042229015
- NPI enumeration date
- September 5, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (508) 693-0410
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 80
- Medical school graduation
- 1972
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marshall Katzen practices at 2 locations in Oak Bluffs, Massachusetts
Dr. Katzen's primary practice is Martha's Vineyard Hospital, at One Hospital Road, First Fl, Wing 5, PO Box 1477, Oak Bluffs, MA 02557 in Dukes County. The practice phone is (508) 693-0410. Dr. Katzen also practices at Martha's Vineyard Hospital, 1 Hospital Way, Oak Bluffs, MA 02557.
- Martha's Vineyard HospitalPrimaryOne Hospital Road, First Fl, Wing 5, PO Box 1477, Oak Bluffs, MA 02557 · Dukes CountyPhone(508) 693-0410
- Martha's Vineyard Hospital1 Hospital Way, Oak Bluffs, MA 02557 · Dukes CountyPhone(508) 693-0410
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Marshall Katzen is affiliated with 2 sites of care and 1 medical group
Dr. Katzen's primary practice is Martha's Vineyard Hospital in Oak Bluffs, Massachusetts, part of Mass General Brigham. The medical group on file is Martha's Vineyard Hospital. Dmand AI also links Dr. Katzen to 1 more senior living community, named with a free account. Dr. Katzen'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. Marshall Katzen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Katzen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Martha's Vineyard Hospital | 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. Marshall Katzen is one of 593 orthopedic surgeons in Massachusetts
Orthopaedic surgery is Dr. Katzen's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Katzen is licensed in Massachusetts.
Specialties and state licenses
- Orthopaedic surgery, MassachusettsPrimary
Orthopedic surgeons near Dr. Katzen
Counts of orthopedic 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. Marshall Katzen billed Medicare for 649 services in 2019
CMS data shows 649 Medicare services from Dr. Katzen across 6 procedure codes in 2019. Medicare paid $38,561 for them.
Dr. Katzen's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 5232019: 4897%
- Surgery
- 2018: 1732019: 1608%
Where Dr. Katzen's Medicare services took place, 2019
- In an office46772%
- In a facility18228%
Dr. Katzen compared with the Massachusetts median for orthopedic surgeons, 2019
- Dr. Katzen
- Massachusetts median
- Medicare services
- 649vs 672Close to median
- Part D claims
- 11vs 5078% below
Medians across 543 orthopedic surgeons in Massachusetts with Dmand AI profiles that report each measure.
Dr. Katzen'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marshall Katzen's patients have a median age of 75
Across all payers, Dmand AI patient panel data puts Dr. Katzen's median patient age at 75, with 61% women.
Dr. Katzen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women61%
- Men39%
Source: Dmand AI Patient Panel Data
Dr. Marshall Katzen wrote 24 Medicare Part D claims in 2024
In 2024, Dr. Katzen wrote 24 Medicare Part D claims for 19 patients. 100% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $374 in total drug cost. In 2018, CMS named 16 claims across 1 drug.
Dr. Katzen's most prescribed drugs by claims, 2023
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, 2018 to 2023
- 2018
- 2023
- Claims for drugs CMS names
- 2018: 162023: 1131%
Drugs named by CMS: 1 in 2023, 1 in 2018.
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. Marshall Katzen takes part in Medicare
Dr. Katzen 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. Marshall Katzen received $30 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Katzen from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. DePuy Synthes Sales Inc. paid the most, $30.
Companies that paid Dr. Katzen the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marshall Katzen graduated from Tufts University School of Medicine
Dr. Katzen graduated from Tufts University School of Medicine in 1972.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marshall Katzen'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice 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) |
| 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. Marshall Katzen
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. Marshall Katzen's NPI number?
Dr. Marshall Katzen's NPI number is 1326140682. It was assigned on September 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marshall Katzen?
Dr. Marshall Katzen is an orthopedic surgeon in Oak Bluffs, Massachusetts. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Marshall Katzen practice?
Dr. Katzen practices at One Hospital Road, First Fl, Wing 5, PO Box 1477, Oak Bluffs, MA 02557. Dr. Katzen also practices at 1 Hospital Way, Oak Bluffs, MA 02557. Dr. Katzen's primary practice is Martha's Vineyard Hospital in Oak Bluffs, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Katzen to 1 senior living community.
What is Dr. Marshall Katzen's office phone number?
The practice phone on file for Dr. Katzen is (508) 693-0410.
What is Dr. Marshall Katzen's medical license number?
Dr. Katzen holds Massachusetts license 43593.
Which hospitals is Dr. Marshall Katzen affiliated with?
Dr. Katzen practices at Martha's Vineyard Hospital in Oak Bluffs, Massachusetts.
What medical group is Dr. Marshall Katzen part of?
Dr. Katzen is linked to Martha's Vineyard Hospital.
Does Dr. Marshall Katzen accept Medicare?
Yes. CMS data shows Dr. Katzen billed Medicare for 649 services in 2019, and Dr. Katzen accepts Medicare assignment.
What services does Dr. Marshall Katzen bill to Medicare?
In 2019, Dr. Katzen's most billed Medicare services were office visit, established patient (99213), surgery: bones and joints (20610) and hospital inpatient care (99222).
Where did Dr. Marshall Katzen go to medical school?
Dr. Katzen graduated from Tufts University School of Medicine in 1972.
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What drugs does Dr. Marshall Katzen prescribe most?
In 2023 Medicare Part D data, Dr. Katzen's most prescribed drugs by claims were Celecoxib.
Has Dr. Marshall Katzen received payments from drug or device companies?
CMS Open Payments shows $30 in general payments to Dr. Katzen from 1 company from 2017 to 2017. The largest total came from DePuy Synthes Sales Inc.
How long has Dr. Marshall Katzen been practicing?
Dr. Katzen graduated from medical school in 1972, 54 years ago.
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