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Dr. Megan A. Callahan, MD
NPI1780642611PAC ID5698719151
- Medicare services, 2024
- 834
- Medicare patients, 2024
- 380
- Part D claims, 2024
- 2,783
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 76 Park St, Attleboro, MA 02703-2335
- Practice phone
- Call (508) 431-2026
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Neurology Partners
Multi-specialty group site · Attleboro, Massachusetts
Find Dr. Callahan's professional email, personal email and mobile number
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Dr. Megan A. Callahan is a neurologist in Attleboro, Massachusetts
Dr. Callahan practices at Neurology Partners in Attleboro, Massachusetts.
Dr. Callahan's NPI, 1780642611, was assigned on May 2, 2006. Dr. Callahan graduated from Boston University School of Medicine in 1990. Dr. Callahan holds Massachusetts license 77694.
NPI and contact details
- NPI
- 1780642611NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698719151
- NPI enumeration date
- May 2, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (508) 431-2026
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Megan A. Callahan practices at Neurology Partners in Attleboro, Massachusetts
Dr. Callahan's primary practice is Neurology Partners, at 76 Park St, Attleboro, MA 02703-2335. The practice phone is (508) 431-2026.
- Neurology Partners76 Park St, Attleboro, MA 02703-2335Phone(508) 431-2026
Source: Dmand AI Affiliation Data
Dr. Megan A. Callahan is affiliated with 2 sites of care and 1 medical group
Dr. Callahan's primary practice is Neurology Partners in Attleboro, Massachusetts. Dr. Callahan is also affiliated with Sturdy Memorial Hospital. The medical group on file is Neurology Partners.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Megan A. Callahan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Callahan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Neurology Partners | 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. Megan A. Callahan is one of 806 neurologists in Massachusetts
Neurology is Dr. Callahan's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Callahan is licensed in Massachusetts.
Specialties and state licenses
- Neurology, MassachusettsPrimary
Neurologists near Dr. Callahan
Counts of neurologists with a Dmand AI profile, by place and practice. Each opens the list.
806neurologists in Massachusetts
3neurologists in Attleboro
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Megan A. Callahan billed Medicare for 834 services in 2024
CMS data shows 834 Medicare services from Dr. Callahan across 15 procedure codes in 2024, for 380 Medicare patients. Medicare paid $83,350 for them. Every service was in an office.
Medicare services, 2024834
Medicare patients380
Paid by Medicare$83,350
Procedure codes15
Dr. Callahan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6472024: 6421%
- Tests and treatments
- 2023: 2792024: 19231%
Dr. Callahan compared with the Massachusetts median for neurologists, 2024
- Dr. Callahan
- Massachusetts median
- Medicare services
- 834vs 3142.7 times
- Medicare patients
- 380vs 1782.1 times
- Part D claims
- 2,513vs 2709.3 times
Medians across 741 neurologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Callahan'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.
Need commercial claims for Dr. Callahan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Callahan and other neurologists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Megan A. Callahan treated 380 Medicare patients in 2024, average age 75
CMS counts 380 Medicare patients who saw Dr. Callahan in 2024. The largest group is 75 to 84, with 163 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 29% are also on Medicaid. Their average risk score is 1.29, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Callahan's median patient age at 68, with 62% women.
Medicare patients, 2024380
Average age75
Average risk score1.29
Also on Medicaid29%
Dr. Callahan's Medicare patients by age, 2024
Dr. Callahan's Medicare patients by sex, 2024
- Women23662%
- Men14438%
Chronic conditions among Dr. Callahan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Anxiety38%
- Diabetes34%
- Mood disorders33%
- Depression27%
- Ischemic heart disease23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Callahan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women62%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Megan A. Callahan wrote 2,783 Medicare Part D claims in 2024
In 2024, Dr. Callahan wrote 2,783 Medicare Part D claims for 383 patients. 90% of them were for generic drugs. CMS names the drug for 2,513 of them, across 58 drugs with 11 or more claims each, at $794,325 in total drug cost. In 2023, CMS named 2,395 claims across 57 drugs.
Part D claims, 20242,783
Drugs named by CMS58
Total drug cost$794,325
Part D patients383
Dr. Callahan's Part D claims by kind of drug, 2024
- Generic2,504 claims90%
- Brand-name266 claims10%
- Other13 claims0%
Dr. Callahan'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. Callahan's Part D claims, 2024
- Opioids4%104 of 2,783 claims
- Antipsychotics, patients 65 and over1%40 of 2,783 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: 2,3952024: 2,5135%
Drugs named by CMS: 58 in 2024, 57 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. Megan A. Callahan scored 0 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 0 out of 100 for Dr. Callahan for performance year 2024, reported individually. Dr. Callahan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Callahan's MIPS scores, performance year 2024
- 0of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 0of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Megan A. Callahan has 1 publication on record
Dmand AI links 1 paper to Dr. Callahan in 2023.
Papers1
Recent publications by Dr. Callahan
See who Dr. Callahan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Callahan works with, so you can find a warm path to the right neurologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Megan A. Callahan received $30,440 in industry payments from 2016 to 2025
CMS Open Payments shows 1,485 general payments to Dr. Callahan from 71 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Abbvie Inc. paid the most, $1,751.
General payments to Dr. Callahan by program year, 2016 to 2025
General payments to Dr. Callahan by kind, 2016 to 2025
$30.4Kin total
- Food and beverage$29,60097%
- Travel and lodging$4992%
- Education$2451%
- Speaker and faculty fees$960%
Companies that paid Dr. Callahan the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Megan A. Callahan graduated from Boston University School of Medicine
Dr. Callahan graduated from Boston University School of Medicine in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Megan A. Callahan'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 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Megan A. Callahan
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. Megan A. Callahan's NPI number?
Dr. Megan A. Callahan's NPI number is 1780642611. It was assigned on May 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Megan A. Callahan?
Dr. Megan A. Callahan is a neurologist in Attleboro, Massachusetts. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Megan A. Callahan practice?
Dr. Callahan practices at 76 Park St, Attleboro, MA 02703-2335. Dr. Callahan's primary practice is Neurology Partners in Attleboro, Massachusetts.
What is Dr. Megan A. Callahan's office phone number?
The practice phone on file for Dr. Callahan is (508) 431-2026.
What is Dr. Megan A. Callahan's medical license number?
Dr. Callahan holds Massachusetts license 77694.
Which hospitals is Dr. Megan A. Callahan affiliated with?
Dr. Callahan is affiliated with Sturdy Memorial Hospital.
What medical group is Dr. Megan A. Callahan part of?
Dr. Callahan is linked to Neurology Partners.
Does Dr. Megan A. Callahan accept Medicare?
Yes. CMS data shows Dr. Callahan billed Medicare for 834 services in 2024, and Dr. Callahan accepts Medicare assignment.
What is Dr. Megan A. Callahan's MIPS score?
Dr. Callahan's MIPS final score for performance year 2024 is 0 out of 100, reported individually.
How many Medicare patients does Dr. Megan A. Callahan see?
CMS counts 380 Medicare patients who saw Dr. Callahan in 2024, with an average age of 75.
Show 6 more questionsShow fewer questions
What services does Dr. Megan A. Callahan bill to Medicare?
In 2024, Dr. Callahan's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99215) and office visit, established patient (99213).
Where did Dr. Megan A. Callahan go to medical school?
Dr. Callahan graduated from Boston University School of Medicine in 1990.
What drugs does Dr. Megan A. Callahan prescribe most?
In 2024 Medicare Part D data, Dr. Callahan's most prescribed drugs by claims were Gabapentin, Donepezil HCl and Memantine HCl.
Has Dr. Megan A. Callahan received payments from drug or device companies?
CMS Open Payments shows $30,440 in general payments to Dr. Callahan from 71 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Megan A. Callahan been practicing?
Dr. Callahan graduated from medical school in 1990, 36 years ago.
Does Dr. Megan A. Callahan do research?
Dmand AI links 1 publication to Dr. Callahan.
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