Dr. Joseph Ahn, MD
- Medicare services, 2024
- 476
- Medicare patients, 2024
- 114
- Part D claims, 2024
- 1,688
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 55 Fruit Street, Boston, MA 02114
- Practice phone
- Call (617) 726-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ahn's professional email, personal email and mobile number
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Dr. Joseph Ahn is a psychiatrist in Boston, Massachusetts
Dr. Ahn practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Ahn's NPI, 1477812733, was assigned on May 8, 2012. Dr. Ahn graduated from Creighton University School of Medicine in 2012. Dr. Ahn holds Massachusetts license 267629.
- NPI
- 1477812733NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7214235407
- NPI enumeration date
- May 8, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joseph Ahn practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Ahn's primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.
- Massachusetts General Hospital55 Fruit Street, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2000
Source: Dmand AI Affiliation Data
Dr. Joseph Ahn is affiliated with 2 sites of care and 2 medical groups
Dr. Ahn's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. The medical group on file is Massachusetts General Hospital. Dmand AI also links Dr. Ahn to 1 more community health center and 1 medical group, each named with a free account. Dr. Ahn'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. Joseph Ahn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ahn practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Massachusetts General Hospital | 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. Joseph Ahn is one of 1,857 psychiatrists in Massachusetts
Psychiatry is Dr. Ahn's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Ahn is licensed in Massachusetts.
Specialties and state licenses
- Psychiatry, MassachusettsPrimary
Psychiatrists near Dr. Ahn
Counts of psychiatrists 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. Joseph Ahn billed Medicare for 476 services in 2024
CMS data shows 476 Medicare services from Dr. Ahn across 4 procedure codes in 2024, for 114 Medicare patients. Medicare paid $51,908 for them.
Dr. Ahn's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4502024: 4451%
- Tests and treatments
- 2023: 292024: 317%
Where Dr. Ahn's Medicare services took place, 2024
- In an office28660%
- In a facility19040%
Dr. Ahn compared with the Massachusetts median for psychiatrists, 2024
- Dr. Ahn
- Massachusetts median
- Medicare services
- 476vs 1722.8 times
- Medicare patients
- 114vs 422.7 times
- Part D claims
- 1,558vs 9216.9 times
Medians across 2,056 psychiatrists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Ahn'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joseph Ahn treated 114 Medicare patients in 2024, average age 74
CMS counts 114 Medicare patients who saw Dr. Ahn in 2024. The largest group is 65 to 74, with 47 patients. 75% of them have anxiety, and 75% have mood disorders. 22% are also on Medicaid. Their average risk score is 1.57, 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. Ahn's median patient age at 75, with 56% women.
Dr. Ahn's Medicare patients by age, 2024
Dr. Ahn's Medicare patients by sex, 2024
- Women7263%
- Men4237%
Chronic conditions among Dr. Ahn's Medicare patients, 2024
- Anxiety75%
- Mood disorders75%
- Depression74%
- High cholesterol67%
- High blood pressure62%
- Arthritis49%
- Osteoporosis32%
- Ischemic heart disease28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ahn'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
- Women56%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joseph Ahn wrote 1,688 Medicare Part D claims in 2024
In 2024, Dr. Ahn wrote 1,688 Medicare Part D claims for 182 patients. 95% of them were for generic drugs. CMS names the drug for 1,558 of them, across 37 drugs with 11 or more claims each, at $88,031 in total drug cost. In 2023, CMS named 1,515 claims across 36 drugs.
Dr. Ahn's Part D claims by kind of drug, 2024
- Generic1,600 claims95%
- Brand-name88 claims5%
Dr. Ahn'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. Ahn's Part D claims, 2024
- Antipsychotics, patients 65 and over10%161 of 1,688 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: 1,5152024: 1,5583%
Drugs named by CMS: 37 in 2024, 36 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
Dr. Joseph Ahn offers telehealth to Medicare patients
Dr. Ahn accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ahn as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
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Dr. Joseph Ahn graduated from Creighton University School of Medicine
Dr. Ahn graduated from Creighton University School of Medicine in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Joseph Ahn'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) |
| 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. Joseph Ahn
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. Joseph Ahn's NPI number?
Dr. Joseph Ahn's NPI number is 1477812733. It was assigned on May 8, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Joseph Ahn?
Dr. Joseph Ahn is a psychiatrist in Boston, Massachusetts. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Joseph Ahn practice?
Dr. Ahn practices at 55 Fruit Street, Boston, MA 02114. Dr. Ahn's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Ahn to 1 community health center and 1 medical group.
What is Dr. Joseph Ahn's office phone number?
The practice phone on file for Dr. Ahn is (617) 726-2000.
What is Dr. Joseph Ahn's medical license number?
Dr. Ahn holds Massachusetts license 267629.
Which hospitals is Dr. Joseph Ahn affiliated with?
Dr. Ahn practices at Massachusetts General Hospital in Boston, Massachusetts.
What medical group is Dr. Joseph Ahn part of?
Dr. Ahn is linked to Massachusetts General Hospital. Dmand AI links Dr. Ahn to 1 more medical group.
Does Dr. Joseph Ahn accept Medicare?
Yes. CMS data shows Dr. Ahn billed Medicare for 476 services in 2024, and Dr. Ahn accepts Medicare assignment.
Does Dr. Joseph Ahn offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Ahn as offering telehealth services.
How many Medicare patients does Dr. Joseph Ahn see?
CMS counts 114 Medicare patients who saw Dr. Ahn in 2024, with an average age of 74.
Show 4 more questionsShow fewer questions
What services does Dr. Joseph Ahn bill to Medicare?
In 2024, Dr. Ahn's most billed Medicare services were care management and other visits (99443), office visit, established patient (99215) and office visit, established patient (99214).
Where did Dr. Joseph Ahn go to medical school?
Dr. Ahn graduated from Creighton University School of Medicine in 2012.
What drugs does Dr. Joseph Ahn prescribe most?
In 2024 Medicare Part D data, Dr. Ahn's most prescribed drugs by claims were Clonazepam, Lorazepam and Bupropion XL.
How long has Dr. Joseph Ahn been practicing?
Dr. Ahn graduated from medical school in 2012, 14 years ago.
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