Dr. John J. Fangman, MD
- Medicare services, 2022
- 33
- Medicare patients, 2024
- 14
- Part D claims, 2024
- 112
- Hospital affiliations
- 1
- Industry payments
- $49
- Practice address
- 81 Highland Ave, Salem, MA 01970
- Practice phone
- Call (978) 354-2065
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
MGB Salem Hospital
Salem, Massachusetts
Find Dr. Fangman'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 J. Fangman is an infectious disease specialist in Salem, Massachusetts
Dr. Fangman practices at MGB Salem Hospital in Salem, Massachusetts.
Dr. Fangman's NPI, 1881645737, was assigned on May 15, 2006. Dr. Fangman graduated from University of Minnesota Medical School in 1994. Dr. Fangman holds Wisconsin license 48629.
- NPI
- 1881645737NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335168996
- NPI enumeration date
- May 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (978) 354-2065
- 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 Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John J. Fangman practices at MGB Salem Hospital in Salem, Massachusetts
Dr. Fangman's primary practice is MGB Salem Hospital, at 81 Highland Ave, Salem, MA 01970 in Essex County. The practice phone is (978) 354-2065.
- MGB Salem Hospital81 Highland Ave, Salem, MA 01970 · Essex CountyPhone(978) 354-2065
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John J. Fangman is affiliated with 4 sites of care and 4 medical groups
Dr. Fangman's primary practice is MGB Salem Hospital in Salem, Massachusetts. Dr. Fangman is also affiliated with Salem Hospital. The medical group on file is Mass General Brigham Community Physicians Organization. Dmand AI also links Dr. Fangman to 3 more medical groups and 2 group practices and clinics, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John J. Fangman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fangman practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MGB Salem Hospital | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John J. Fangman is one of 395 infectious disease specialists in Massachusetts
Infectious disease is Dr. Fangman's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Fangman is licensed in Wisconsin.
Specialties and state licenses
- Infectious disease, WisconsinPrimary
Infectious disease specialists near Dr. Fangman
Counts of infectious disease specialists 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 J. Fangman billed Medicare for 33 services in 2022
CMS data shows 33 Medicare services from Dr. Fangman across 2 procedure codes in 2022, all of them office visits, for 14 Medicare patients. Medicare paid $3,220 for them. Every service was in an office.
Dr. Fangman's Medicare services by type, 2020 to 2022
- 2020
- 2022
- Office and hospital visits
- 2020: 782022: 3358%
Dr. Fangman compared with the Massachusetts median for infectious disease specialists, 2022
- Dr. Fangman
- Massachusetts median
- Medicare services
- 33vs 16380% below
- Medicare patients
- 14vs 9485% below
- Part D claims
- 43vs 10860% below
Medians across 363 infectious disease specialists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Fangman's most billed Medicare procedure codes, 2022
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. Fangman and other infectious disease specialists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John J. Fangman treated 14 Medicare patients in 2024, average age 68
CMS counts 14 Medicare patients who saw Dr. Fangman in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 1.61, 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. Fangman's median patient age at 63, with 43% women.
Dr. Fangman's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Fangman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women43%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John J. Fangman wrote 112 Medicare Part D claims in 2024
In 2024, Dr. Fangman wrote 112 Medicare Part D claims for 23 patients. 36% of them were for generic drugs. CMS names the drug for 43 of them, across 2 drugs with 11 or more claims each, at $227,537 in total drug cost. In 2023, CMS named 24 claims across 2 drugs.
Dr. Fangman's Part D claims by kind of drug, 2024
- Generic40 claims36%
- Brand-name72 claims64%
Dr. Fangman'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. Fangman's Part D claims, 2024
- Antibiotics16%18 of 112 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: 242024: 4379%
Drugs named by CMS: 2 in 2024, 2 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
How Dr. John J. Fangman takes part in Medicare
Dr. Fangman 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. John J. Fangman received $49 in industry payments from 2016 to 2023
CMS Open Payments shows 3 general payments to Dr. Fangman from 3 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 73% of the total. Hologic Inc paid the most, $21.
General payments to Dr. Fangman by program year, 2016 to 2023
General payments to Dr. Fangman by kind, 2016 to 2023
- Food and beverage$3673%
- Travel and lodging$1327%
Companies that paid Dr. Fangman the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John J. Fangman graduated from University of Minnesota Medical School
Dr. Fangman graduated from University of Minnesota Medical School in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John J. Fangman'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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 |
| 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 J. Fangman
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 J. Fangman's NPI number?
Dr. John J. Fangman's NPI number is 1881645737. It was assigned on May 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John J. Fangman?
Dr. John J. Fangman is an infectious disease specialist in Salem, Massachusetts. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. John J. Fangman practice?
Dr. Fangman practices at 81 Highland Ave, Salem, MA 01970. Dr. Fangman's primary practice is MGB Salem Hospital in Salem, Massachusetts. Dmand AI also links Dr. Fangman to 3 medical groups and 2 group practices and clinics.
What is Dr. John J. Fangman's office phone number?
The practice phone on file for Dr. Fangman is (978) 354-2065.
What is Dr. John J. Fangman's medical license number?
Dr. Fangman holds Wisconsin license 48629.
Which hospitals is Dr. John J. Fangman affiliated with?
Dr. Fangman is affiliated with Salem Hospital.
What medical group is Dr. John J. Fangman part of?
Dr. Fangman is linked to Mass General Brigham Community Physicians Organization. Dmand AI links Dr. Fangman to 3 more medical groups.
Does Dr. John J. Fangman accept Medicare?
Yes. CMS data shows Dr. Fangman billed Medicare for 33 services in 2022, and Dr. Fangman accepts Medicare assignment.
How many Medicare patients does Dr. John J. Fangman see?
CMS counts 14 Medicare patients who saw Dr. Fangman in 2024, with an average age of 68.
What services does Dr. John J. Fangman bill to Medicare?
In 2022, Dr. Fangman's most billed Medicare services were office visit, established patient (99213) and office visit, new patient (99204).
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Where did Dr. John J. Fangman go to medical school?
Dr. Fangman graduated from University of Minnesota Medical School in 1994.
What drugs does Dr. John J. Fangman prescribe most?
In 2024 Medicare Part D data, Dr. Fangman's most prescribed drugs by claims were Biktarvy and Cabenuva.
Has Dr. John J. Fangman received payments from drug or device companies?
CMS Open Payments shows $49 in general payments to Dr. Fangman from 3 companies from 2016 to 2023. The largest total came from Hologic Inc.
How long has Dr. John J. Fangman been practicing?
Dr. Fangman graduated from medical school in 1994, 32 years ago.
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