Dr. Gerald John Riffelmacher, MD
- Medicare services, 2019
- 1,220
- Part D claims, 2020
- 51
- Industry payments
- $24
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 101 Main St Suite 112 Suite 112, Medford, MA 02155-4530
- Practice phone
- Call (781) 338-7270
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ell Pond Medical Associates INC
Multi-specialty group site · Medford, Massachusetts
Find Dr. Riffelmacher'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. Gerald John Riffelmacher is an internist in Medford, Massachusetts
Dr. Riffelmacher practices at Ell Pond Medical Associates INC in Medford, Massachusetts.
Dr. Riffelmacher's NPI, 1457351900, was assigned on July 27, 2005. Dr. Riffelmacher holds Massachusetts license 43699.
- NPI
- 1457351900NPI Registry (opens in a new tab)
- NPI enumeration date
- July 27, 2005
- NPI status
- Active
- Practice phone
- (781) 338-7270
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gerald John Riffelmacher practices at 2 locations in Medford, Massachusetts
Dr. Riffelmacher's primary practice is Ell Pond Medical Associates INC, at 101 Main St Suite 112 Suite 112, Medford, MA 02155-4530. The practice phone is (781) 338-7270. The NPI Registry lists Dr. Riffelmacher's practice address as 170 Governors Ave, Medford, MA 02155.
- Ell Pond Medical Associates INCPrimary101 Main St Suite 112 Suite 112, Medford, MA 02155-4530Phone(781) 338-7270
- NPI Registry address170 Governors Ave, Medford, MA 02155 · Middlesex CountyPhone(781) 395-7638
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Gerald John Riffelmacher is affiliated with 1 site of care and 1 medical group
Dr. Riffelmacher's primary practice is Ell Pond Medical Associates INC in Medford, Massachusetts. The medical group on file is Tufts Medical Center Community Care.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Gerald John Riffelmacher's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Riffelmacher practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ell Pond Medical Associates INC | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gerald John Riffelmacher is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Riffelmacher's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Riffelmacher is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Riffelmacher
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. Gerald John Riffelmacher billed Medicare for 1,220 services in 2019
CMS data shows 1,220 Medicare services from Dr. Riffelmacher across 15 procedure codes in 2019. Medicare paid $93,182 for them. Every service was in an office.
Dr. Riffelmacher's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 9102019: 58835%
- Other services
- 2018: 4422019: 54824%
- Tests and treatments
- 2018: 1502019: 8444%
Dr. Riffelmacher compared with the Massachusetts median for internists, 2019
- Dr. Riffelmacher
- Massachusetts median
- Medicare services
- 1,220vs 4312.8 times
- Part D claims
- 51vs 40287% below
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Riffelmacher's most billed Medicare procedure codes, 2019
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. Riffelmacher and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gerald John Riffelmacher's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Dr. Riffelmacher's median patient age at 68, with 30% women.
Dr. Riffelmacher'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
- Women30%
- Men70%
Source: Dmand AI Patient Panel Data
Dr. Gerald John Riffelmacher wrote 51 Medicare Part D claims in 2020
In 2020, Dr. Riffelmacher wrote 51 Medicare Part D claims. Every claim was for a generic drug. They cover 4 drugs, with $580 in total drug cost. In 2019, CMS named 2,760 claims across 61 drugs.
Dr. Riffelmacher's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 2,7602020: 5198%
Drugs named by CMS: 4 in 2020, 61 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Gerald John Riffelmacher received $24 in industry payments in 2016
CMS Open Payments shows 2 general payments to Dr. Riffelmacher from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $24.
Companies that paid Dr. Riffelmacher the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Gerald John Riffelmacher'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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. Gerald John Riffelmacher
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. Gerald John Riffelmacher's NPI number?
Dr. Gerald John Riffelmacher's NPI number is 1457351900. It was assigned on July 27, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Gerald John Riffelmacher?
Dr. Gerald John Riffelmacher is an internist in Medford, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Gerald John Riffelmacher practice?
Dr. Riffelmacher practices at 101 Main St Suite 112 Suite 112, Medford, MA 02155-4530. Dr. Riffelmacher also practices at 170 Governors Ave, Medford, MA 02155. Dr. Riffelmacher's primary practice is Ell Pond Medical Associates INC in Medford, Massachusetts.
What is Dr. Gerald John Riffelmacher's office phone number?
The practice phone on file for Dr. Riffelmacher is (781) 338-7270.
What is Dr. Gerald John Riffelmacher's medical license number?
Dr. Riffelmacher holds Massachusetts license 43699.
What medical group is Dr. Gerald John Riffelmacher part of?
Dr. Riffelmacher is linked to Tufts Medical Center Community Care.
Does Dr. Gerald John Riffelmacher accept Medicare?
Yes. CMS data shows Dr. Riffelmacher billed Medicare for 1,220 services in 2019.
What services does Dr. Gerald John Riffelmacher bill to Medicare?
In 2019, Dr. Riffelmacher's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and medicare service (G0444).
What drugs does Dr. Gerald John Riffelmacher prescribe most?
In 2020 Medicare Part D data, Dr. Riffelmacher's most prescribed drugs by claims were Simvastatin, Atorvastatin Calcium and Levothyroxine Sodium.
Has Dr. Gerald John Riffelmacher received payments from drug or device companies?
CMS Open Payments shows $24 in general payments to Dr. Riffelmacher from 1 company from 2016 to 2016. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Gerald John Riffelmacher been practicing?
Dr. Riffelmacher's NPI was assigned in 2005.
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