Dr. John G. Pierce, MD
- Medicare services, 2024
- 6,062
- Medicare patients, 2024
- 4,388
- MIPS score, 2024
- 75
- Hospital affiliations
- 5
- Industry payments
- $1,083
- Practice address
- 333 Borthwick Ave, Portsmouth, NH 03801
- Practice phone
- Call (603) 436-5110
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Pierce'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. John G. Pierce is a diagnostic radiologist in Portsmouth, New Hampshire
Dr. Pierce practices at Portsmouth Regional Hospital in Portsmouth, New Hampshire, part of HCA Healthcare.
Dr. Pierce's NPI, 1770652430, was assigned on November 7, 2006. Dr. Pierce graduated from Tufts University School of Medicine in 1992. Dr. Pierce holds New Hampshire license 10341.
- NPI
- 1770652430NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547429565
- NPI enumeration date
- November 7, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (603) 436-5110
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John G. Pierce practices at Portsmouth Regional Hospital in Portsmouth, New Hampshire
Dr. Pierce's primary practice is Portsmouth Regional Hospital, at 333 Borthwick Ave, Portsmouth, NH 03801 in Rockingham County. The practice phone is (603) 436-5110.
- Portsmouth Regional Hospital333 Borthwick Ave, Portsmouth, NH 03801 · Rockingham CountyPhone(603) 436-5110
Source: Dmand AI Affiliation Data
Dr. John G. Pierce is affiliated with 9 sites of care and 4 medical groups
Dr. Pierce's primary practice is Portsmouth Regional Hospital in Portsmouth, New Hampshire, part of HCA Healthcare. Dr. Pierce is also affiliated with Elliot Hospital. The medical group on file is SimonMed Imaging. Dmand AI also links Dr. Pierce to 3 more hospitals, 3 group practices and clinics, 3 medical groups and 1 ambulatory surgery center, each 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 G. Pierce's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Pierce practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Portsmouth Regional Hospital | Available with a free account |
| +8 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John G. Pierce is one of 168 diagnostic radiologists in New Hampshire
Diagnostic radiology is Dr. Pierce's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Pierce is licensed in New Hampshire.
Specialties and state licenses
- Diagnostic radiology, New HampshirePrimary
Diagnostic radiologists near Dr. Pierce
Counts of diagnostic radiologists 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 G. Pierce billed Medicare for 6,062 services in 2024
CMS data shows 6,062 Medicare services from Dr. Pierce across 60 procedure codes in 2024, for 4,388 Medicare patients. Medicare paid $130,381 for them.
Dr. Pierce's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 5,7702024: 5,4426%
- Tests and treatments
- 2023: 4812024: 62029%
Where Dr. Pierce's Medicare services took place, 2024
- In an office4928%
- In a facility5,57092%
Dr. Pierce compared with the New Hampshire median for diagnostic radiologists, 2024
- Dr. Pierce
- New Hampshire median
- Medicare services
- 6,062vs 2,7992.2 times
- Medicare patients
- 4,388vs 2,0302.2 times
Medians across 172 diagnostic radiologists in New Hampshire with Dmand AI profiles that report each measure.
Dr. Pierce'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. Pierce and other diagnostic radiologists in New Hampshire.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John G. Pierce treated 4,388 Medicare patients in 2024, average age 74
CMS counts 4,388 Medicare patients who saw Dr. Pierce in 2024. The largest group is 65 to 74, with 1,645 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.45, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Pierce's median patient age at 69, with 60% women.
Dr. Pierce's Medicare patients by age, 2024
Dr. Pierce's Medicare patients by sex, 2024
- Women2,56658%
- Men1,82242%
Chronic conditions among Dr. Pierce's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Anxiety37%
- Mood disorders36%
- Depression32%
- Ischemic heart disease31%
- Diabetes30%
Share of Medicare patients with each condition. A patient can have several.
Dr. Pierce's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John G. Pierce scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Pierce for performance year 2024, reported as part of a group. Dr. Pierce accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
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. John G. Pierce received $1,083 in industry payments from 2016 to 2025
CMS Open Payments shows 37 general payments to Dr. Pierce from 16 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. BTG International, Inc. paid the most, $234.
General payments to Dr. Pierce by program year, 2016 to 2025
Companies that paid Dr. Pierce 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. John G. Pierce graduated from Tufts University School of Medicine
Dr. Pierce graduated from Tufts University School of Medicine in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John G. Pierce'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) |
| 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) |
| 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. John G. Pierce
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 G. Pierce's NPI number?
Dr. John G. Pierce's NPI number is 1770652430. It was assigned on November 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John G. Pierce?
Dr. John G. Pierce is a diagnostic radiologist in Portsmouth, New Hampshire. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. John G. Pierce practice?
Dr. Pierce practices at 333 Borthwick Ave, Portsmouth, NH 03801. Dr. Pierce's primary practice is Portsmouth Regional Hospital in Portsmouth, New Hampshire, part of HCA Healthcare. Dmand AI also links Dr. Pierce to 3 hospitals, 3 group practices and clinics, 3 medical groups and 1 ambulatory surgery center.
What is Dr. John G. Pierce's office phone number?
The practice phone on file for Dr. Pierce is (603) 436-5110.
What is Dr. John G. Pierce's medical license number?
Dr. Pierce holds New Hampshire license 10341.
Which hospitals is Dr. John G. Pierce affiliated with?
Dr. Pierce practices at Portsmouth Regional Hospital in Portsmouth, New Hampshire. Dr. Pierce is also affiliated with Elliot Hospital. Dmand AI links Dr. Pierce to 3 more hospitals.
What medical group is Dr. John G. Pierce part of?
Dr. Pierce is linked to SimonMed Imaging. Dmand AI links Dr. Pierce to 3 more medical groups.
Does Dr. John G. Pierce accept Medicare?
Yes. CMS data shows Dr. Pierce billed Medicare for 6,062 services in 2024, and Dr. Pierce accepts Medicare assignment.
What is Dr. John G. Pierce's MIPS score?
Dr. Pierce's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
How many Medicare patients does Dr. John G. Pierce see?
CMS counts 4,388 Medicare patients who saw Dr. Pierce in 2024, with an average age of 74.
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What services does Dr. John G. Pierce bill to Medicare?
In 2024, Dr. Pierce's most billed Medicare services were diagnostic imaging (71046), diagnostic imaging (71045) and diagnostic imaging (70450).
Where did Dr. John G. Pierce go to medical school?
Dr. Pierce graduated from Tufts University School of Medicine in 1992.
Has Dr. John G. Pierce received payments from drug or device companies?
CMS Open Payments shows $1,083 in general payments to Dr. Pierce from 16 companies from 2016 to 2025. The largest total came from BTG International, Inc.
How long has Dr. John G. Pierce been practicing?
Dr. Pierce graduated from medical school in 1992, 34 years ago.
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