Dr. John Gerald Dowd, DO
- Medicare services, 2024
- 553
- Medicare patients, 2024
- 432
- Part D claims, 2024
- 565
- Hospital affiliations
- 1
- Industry payments
- $3,832
- Practice address
- 133 Old Road To 9 Acre Corner, West Concord, MA 01742
- Practice phone
- Call (978) 369-1400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Dowd's professional email, personal email and mobile number
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Dr. John Gerald Dowd is a gastroenterologist in Concord, Massachusetts
Dr. Dowd practices at Emerson Hospital in West Concord, Massachusetts, part of Emerson Health System.
Dr. Dowd's NPI, 1164498648, was assigned on February 24, 2006. Dr. Dowd holds New Hampshire license 10860.
- NPI
- 1164498648NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4688642135
- NPI enumeration date
- February 24, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (978) 369-1400
- 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 Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Gerald Dowd practices at Emerson Hospital in West Concord, Massachusetts
Dr. Dowd's primary practice is Emerson Hospital, at 133 Old Road To 9 Acre Corner, West Concord, MA 01742 in Middlesex County. The practice phone is (978) 369-1400.
- Emerson Hospital133 Old Road To 9 Acre Corner, West Concord, MA 01742 · Middlesex CountyPhone(978) 369-1400
Source: Dmand AI Affiliation Data
Dr. John Gerald Dowd is affiliated with 2 sites of care and 1 medical group
Dr. Dowd's primary practice is Emerson Hospital in West Concord, Massachusetts, part of Emerson Health System. The medical group on file is Emerson Health. Dmand AI also links Dr. Dowd to 1 more therapy and rehab clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Gerald Dowd's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dowd practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Emerson Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Emerson Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John Gerald Dowd is one of 597 gastroenterologists in Massachusetts
Gastroenterology is Dr. Dowd's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Dowd is licensed in New Hampshire.
Specialties and state licenses
- Gastroenterology, New HampshirePrimary
Gastroenterologists near Dr. Dowd
Counts of gastroenterologists 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 Gerald Dowd billed Medicare for 553 services in 2024
CMS data shows 553 Medicare services from Dr. Dowd across 10 procedure codes in 2024, for 432 Medicare patients. Medicare paid $72,040 for them.
Dr. Dowd's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 2322024: 2529%
- Office and hospital visits
- 2023: 2582024: 2465%
- Other services
- 2023: 132024: 55323%
Where Dr. Dowd's Medicare services took place, 2024
- In an office18233%
- In a facility37167%
Dr. Dowd compared with the Massachusetts median for gastroenterologists, 2024
- Dr. Dowd
- Massachusetts median
- Medicare services
- 553vs 5197% above
- Medicare patients
- 432vs 34326% above
- Part D claims
- 408vs 30036% above
Medians across 583 gastroenterologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Dowd'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. Dowd?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dowd and other gastroenterologists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Gerald Dowd treated 432 Medicare patients in 2024, average age 75
CMS counts 432 Medicare patients who saw Dr. Dowd in 2024. The largest group is 65 to 74, with 207 patients. 75% of them have high cholesterol, and 69% have high blood pressure. 11% are also on Medicaid. Their average risk score is 1.12, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Dowd's median patient age at 58, with 45% women.
Dr. Dowd's Medicare patients by age, 2024
Dr. Dowd's Medicare patients by sex, 2024
- Women22753%
- Men20547%
Chronic conditions among Dr. Dowd's Medicare patients, 2024
- High cholesterol75%
- High blood pressure69%
- Arthritis44%
- Anxiety26%
- Ischemic heart disease26%
- Mood disorders26%
- Diabetes25%
- Chronic kidney disease24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dowd's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women45%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Gerald Dowd wrote 565 Medicare Part D claims in 2024
In 2024, Dr. Dowd wrote 565 Medicare Part D claims for 175 patients. 76% of them were for generic drugs. CMS names the drug for 408 of them, across 14 drugs with 11 or more claims each, at $111,717 in total drug cost. In 2023, CMS named 351 claims across 14 drugs.
Dr. Dowd's Part D claims by kind of drug, 2024
- Generic431 claims76%
- Brand-name134 claims24%
Dr. Dowd'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. Dowd's Part D claims, 2024
- Antibiotics4%24 of 565 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: 3512024: 40816%
Drugs named by CMS: 14 in 2024, 14 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. John Gerald Dowd ranks in the 80th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Dr. Dowd accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Dowd as offering telehealth. CMS counts 120 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Dowd, more than 80% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Dowd ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 80th percentile120 procedures
- Colonoscopy
- 79th percentile96 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. John Gerald Dowd received $3,832 in industry payments from 2017 to 2025
CMS Open Payments shows 116 general payments to Dr. Dowd from 18 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 89% of the total. Abbvie Inc. paid the most, $1,116.
General payments to Dr. Dowd by program year, 2017 to 2025
General payments to Dr. Dowd by kind, 2017 to 2025
- Food and beverage$3,41689%
- Travel and lodging$41611%
Companies that paid Dr. Dowd the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John Gerald Dowd'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Gerald Dowd
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 Gerald Dowd's NPI number?
Dr. John Gerald Dowd's NPI number is 1164498648. It was assigned on February 24, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Gerald Dowd?
Dr. John Gerald Dowd is a gastroenterologist in Concord, Massachusetts. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. John Gerald Dowd practice?
Dr. Dowd practices at 133 Old Road To 9 Acre Corner, West Concord, MA 01742. Dr. Dowd's primary practice is Emerson Hospital in West Concord, Massachusetts, part of Emerson Health System. Dmand AI also links Dr. Dowd to 1 therapy and rehab clinic.
What is Dr. John Gerald Dowd's office phone number?
The practice phone on file for Dr. Dowd is (978) 369-1400.
What is Dr. John Gerald Dowd's medical license number?
Dr. Dowd holds New Hampshire license 10860.
Which hospitals is Dr. John Gerald Dowd affiliated with?
Dr. Dowd practices at Emerson Hospital in West Concord, Massachusetts.
What medical group is Dr. John Gerald Dowd part of?
Dr. Dowd is linked to Emerson Health.
Does Dr. John Gerald Dowd accept Medicare?
Yes. CMS data shows Dr. Dowd billed Medicare for 553 services in 2024, and Dr. Dowd accepts Medicare assignment.
Does Dr. John Gerald Dowd offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Dowd as offering telehealth services.
How many Medicare patients does Dr. John Gerald Dowd see?
CMS counts 432 Medicare patients who saw Dr. Dowd in 2024, with an average age of 75.
Show 4 more questionsShow fewer questions
What services does Dr. John Gerald Dowd bill to Medicare?
In 2024, Dr. Dowd's most billed Medicare services were surgery: digestive system (45385), office visit, established patient (99213) and surgery: digestive system (43239).
What drugs does Dr. John Gerald Dowd prescribe most?
In 2024 Medicare Part D data, Dr. Dowd's most prescribed drugs by claims were Omeprazole, Pantoprazole Sodium and Linzess.
Has Dr. John Gerald Dowd received payments from drug or device companies?
CMS Open Payments shows $3,832 in general payments to Dr. Dowd from 18 companies from 2017 to 2025. The largest total came from Abbvie Inc.
How long has Dr. John Gerald Dowd been practicing?
Dr. Dowd graduated from medical school in 1994, 32 years ago.
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