Dr. Mark Howard Abensohn, MD
- Medicare services, 2024
- 12,173
- Medicare patients, 2024
- 591
- Part D claims, 2024
- 1,779
- Industry payments
- $2,842
- Affiliated sites
- 1
- Practice address
- 300 1st Ave, Charlestown, MA 02129
- Practice phone
- Call (617) 952-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Spaulding Rehabilitation Hospital - Boston
Charlestown, Massachusetts
Find Dr. Abensohn's professional email, personal email and mobile number
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Dr. Mark Howard Abensohn is an internist in Charlestown, Massachusetts
Dr. Abensohn practices at Spaulding Rehabilitation Hospital - Boston in Charlestown, Massachusetts.
Dr. Abensohn's NPI, 1225005465, was assigned on March 7, 2006. Dr. Abensohn graduated from Icahn School Of Medicine At Mount Sinai in 1979. Dr. Abensohn's Massachusetts license number on file is 56322.
- NPI
- 1225005465NPI Registry (opens in a new tab)
- NPI enumeration date
- March 7, 2006
- NPI status
- Active
- Practice phone
- (617) 952-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 73
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Mark Howard Abensohn practices at Spaulding Rehabilitation Hospital - Boston in Charlestown, Massachusetts
Dr. Abensohn's primary practice is Spaulding Rehabilitation Hospital - Boston, at 300 1st Ave, Charlestown, MA 02129 in Suffolk County. The practice phone is (617) 952-5000.
- Spaulding Rehabilitation Hospital - Boston300 1st Ave, Charlestown, MA 02129 · Suffolk CountyPhone(617) 952-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark Howard Abensohn is affiliated with 2 sites of care and 1 medical group
Dr. Abensohn's primary practice is Spaulding Rehabilitation Hospital - Boston in Charlestown, Massachusetts. Dmand AI also links Dr. Abensohn to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark Howard Abensohn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Abensohn practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Spaulding Rehabilitation Hospital - Boston | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Howard Abensohn is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Abensohn's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Abensohn is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Abensohn's licenses on file in 3 states: Massachusetts, Maryland and District of Columbia.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
- Maryland license
- District of Columbia license
Clinical focus
Dmand AI lists acid reflux, acute mini-stroke (TIA), acute sinusitis, acute skin infection, alzheimer's disease, aneurysm, asthma and atrial fibrillation and flutter among the conditions Dr. Abensohn treats.
Internists near Dr. Abensohn
Counts of internists 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. Mark Howard Abensohn billed Medicare for 12,173 services in 2024
CMS data shows 12,173 Medicare services from Dr. Abensohn across 44 procedure codes in 2024, for 591 Medicare patients. Medicare paid $293,116 for them. Every service was in an office.
Dr. Abensohn's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 5,5722024: 8,30349%
- Office and hospital visits
- 2023: 2,1162024: 1,71819%
- Surgery
- 2023: 1,3742024: 1,06223%
- Other services
- 2023: 7152024: 64210%
- Tests and treatments
- 2023: 6722024: 44833%
Dr. Abensohn compared with the Massachusetts median for internists, 2024
- Dr. Abensohn
- Massachusetts median
- Medicare services
- 12,173vs 43128.2 times
- Medicare patients
- 591vs 1943.0 times
- Part D claims
- 1,342vs 4023.3 times
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Abensohn'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Abensohn and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Howard Abensohn treated 591 Medicare patients in 2024, average age 76
CMS counts 591 Medicare patients who saw Dr. Abensohn in 2024. The largest group is 65 to 74, with 274 patients. 75% of them have high cholesterol, and 68% have high blood pressure. Their average risk score is 0.90, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Abensohn's median patient age at 66, with 48% women.
Dr. Abensohn's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Abensohn's Medicare patients by sex, 2024
- Women28749%
- Men30451%
Chronic conditions among Dr. Abensohn's Medicare patients, 2024
- High cholesterol75%
- High blood pressure68%
- Arthritis32%
- Cancer22%
- Atrial fibrillation18%
- Diabetes18%
- Chronic kidney disease16%
- Ischemic heart disease16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Abensohn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women48%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Howard Abensohn wrote 1,779 Medicare Part D claims in 2024
In 2024, Dr. Abensohn wrote 1,779 Medicare Part D claims for 287 patients. 91% of them were for generic drugs. CMS names the drug for 1,342 of them, across 40 drugs with 11 or more claims each, at $67,188 in total drug cost. In 2023, CMS named 2,761 claims across 67 drugs.
Dr. Abensohn's Part D claims by kind of drug, 2024
- Generic1,620 claims91%
- Brand-name and other159 claims9%
Dr. Abensohn'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. Abensohn's Part D claims, 2024
- Opioids1%22 of 1,779 claims
- Antibiotics1%17 of 1,779 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: 2,7612024: 1,34251%
Drugs named by CMS: 40 in 2024, 67 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
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Dr. Mark Howard Abensohn received $2,842 in industry payments from 2017 to 2022
CMS Open Payments shows 4 general payments to Dr. Abensohn from 3 drug and device companies from 2017 to 2022. Gifts make up the largest share, 59% of the total. Tosoh Bioscience, Inc. paid the most, $1,674.
General payments to Dr. Abensohn by program year, 2017 to 2022
General payments to Dr. Abensohn by kind, 2017 to 2022
- Gifts$1,67459%
- Debt forgiveness$59421%
- Speaker and faculty fees$55820%
- Education$151%
Companies that paid Dr. Abensohn the most, 2017 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark Howard Abensohn has 1 award and honors on record
Dmand AI lists 1 award for Dr. Abensohn, most recently CMS Stage 1 2012 in 2012.
Awards and honors for Dr. Abensohn
- 2012
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Mark Howard Abensohn graduated from Icahn School Of Medicine At Mount Sinai
Dr. Abensohn graduated from Icahn School Of Medicine At Mount Sinai in 1979. Dr. Abensohn is a member of ACP.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Mark Howard Abensohn accepts plans from 1 insurance carrier
Dr. Abensohn 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. Mark Howard Abensohn'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 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Mark Howard Abensohn
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. Mark Howard Abensohn's NPI number?
Dr. Mark Howard Abensohn's NPI number is 1225005465. It was assigned on March 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Howard Abensohn?
Dr. Mark Howard Abensohn is an internist in Charlestown, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark Howard Abensohn practice?
Dr. Abensohn practices at 300 1st Ave, Charlestown, MA 02129. Dr. Abensohn's primary practice is Spaulding Rehabilitation Hospital - Boston in Charlestown, Massachusetts. Dmand AI also links Dr. Abensohn to 1 group practice or clinic and 1 medical group.
What is Dr. Mark Howard Abensohn's office phone number?
The practice phone on file for Dr. Abensohn is (617) 952-5000.
What is Dr. Mark Howard Abensohn's medical license number?
Dr. Abensohn's Massachusetts license number on file is 56322, one of the licenses on file in 3 states.
Which states has Dr. Mark Howard Abensohn been licensed in?
Dmand AI has state licenses on file for Dr. Abensohn in Massachusetts (1986 to 2025), Maryland (1982 to 1984) and District of Columbia (1982).
Does Dr. Mark Howard Abensohn accept Medicare?
Yes. CMS data shows Dr. Abensohn billed Medicare for 12,173 services in 2024.
How many Medicare patients does Dr. Mark Howard Abensohn see?
CMS counts 591 Medicare patients who saw Dr. Abensohn in 2024, with an average age of 76.
Is Dr. Mark Howard Abensohn board certified?
Yes. Dr. Abensohn is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Mark Howard Abensohn bill to Medicare?
In 2024, Dr. Abensohn's most billed Medicare services were surgery: heart and blood vessels (36415), lab and pathology test (85025) and office visit, established patient (99214).
Show 5 more questionsShow fewer questions
Where did Dr. Mark Howard Abensohn go to medical school?
Dr. Abensohn graduated from Icahn School Of Medicine At Mount Sinai in 1979.
What drugs does Dr. Mark Howard Abensohn prescribe most?
In 2024 Medicare Part D data, Dr. Abensohn's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Levothyroxine Sodium.
Has Dr. Mark Howard Abensohn received payments from drug or device companies?
CMS Open Payments shows $2,842 in general payments to Dr. Abensohn from 3 companies from 2017 to 2022. The largest total came from Tosoh Bioscience, Inc.
How long has Dr. Mark Howard Abensohn been practicing?
Dr. Abensohn graduated from medical school in 1979, 47 years ago.
What insurance does Dr. Mark Howard Abensohn accept?
Dr. Abensohn 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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