Dr. Michael Grandfield Mazzotta, MD
- Part D claims, 2024
- 229
- Hospital affiliations
- 1
- Industry payments
- $48
- Medical groups
- 3
- State license
- 1
- Practice address
- 4212 N.E. Broadway, Portland, OR 97213
- Practice phone
- Call (503) 331-7646
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
The Oregon Clinic Broadway Medical
Mammography / Breast Imaging Center · Portland, Oregon
Find Dr. Mazzotta'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. Michael Grandfield Mazzotta is an internist in Portland, Oregon
Dr. Mazzotta practices at The Oregon Clinic Broadway Medical in Portland, Oregon.
Dr. Mazzotta's NPI, 1841427572, was assigned on June 21, 2009. Dr. Mazzotta graduated from University of Massachusetts Medical School in 2009. Dr. Mazzotta holds Oregon license 173217.
- NPI
- 1841427572NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072748185
- NPI enumeration date
- June 21, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (503) 331-7646
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael Grandfield Mazzotta practices at The Oregon Clinic Broadway Medical in Portland, Oregon
Dr. Mazzotta's primary practice is The Oregon Clinic Broadway Medical, at 4212 N.E. Broadway, Portland, OR 97213. The practice phone is (503) 331-7646.
- The Oregon Clinic Broadway Medical4212 N.E. Broadway, Portland, OR 97213Phone(503) 331-7646
Source: Dmand AI Affiliation Data
Dr. Michael Grandfield Mazzotta is affiliated with 4 sites of care and 3 medical groups
Dr. Mazzotta's primary practice is The Oregon Clinic Broadway Medical in Portland, Oregon. Dr. Mazzotta is also affiliated with Kaiser Permanente Sunnyside Medical Center. The medical group on file is Kaiser Permanente Northwest. Dmand AI also links Dr. Mazzotta to 2 more group practices and clinics and 2 medical groups, each named with a free account. Dr. Mazzotta's employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael Grandfield Mazzotta's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mazzotta practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The Oregon Clinic Broadway Medical | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael Grandfield Mazzotta is one of 1,680 internists in Oregon
Internal medicine is Dr. Mazzotta's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Mazzotta is licensed in Oregon.
Specialties and state licenses
- Internal medicine, OregonPrimary
Internists near Dr. Mazzotta
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. Michael Grandfield Mazzotta's patients have a median age of 12
Across all payers, Dmand AI patient panel data puts Dr. Mazzotta's median patient age at 12, with 40% women.
Dr. Mazzotta's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 12
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. Michael Grandfield Mazzotta wrote 229 Medicare Part D claims in 2024
In 2024, Dr. Mazzotta wrote 229 Medicare Part D claims for 158 patients. 59% of them were for generic drugs. CMS names the drug for 92 of them, across 4 drugs with 11 or more claims each, at $497 in total drug cost. In 2023, CMS named 390 claims across 5 drugs.
Dr. Mazzotta's Part D claims by kind of drug, 2024
- Generic134 claims59%
- Brand-name84 claims37%
- Other11 claims5%
Dr. Mazzotta'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. Mazzotta's Part D claims, 2024
- Antibiotics23%53 of 229 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: 3902024: 9276%
Drugs named by CMS: 4 in 2024, 5 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
How Dr. Michael Grandfield Mazzotta takes part in Medicare
Dr. Mazzotta accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Michael Grandfield Mazzotta received $48 in industry payments from 2018 to 2019
CMS Open Payments shows 2 general payments to Dr. Mazzotta from 2 drug and device companies from 2018 to 2019. Food and beverage make up the largest share, 100% of the total. Sobi, Inc paid the most, $35.
General payments to Dr. Mazzotta by program year, 2018 to 2019
Companies that paid Dr. Mazzotta the most, 2018 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael Grandfield Mazzotta graduated from University of Massachusetts Medical School
Dr. Mazzotta graduated from University of Massachusetts Medical School in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael Grandfield Mazzotta'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 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)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) |
| 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. Michael Grandfield Mazzotta
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. Michael Grandfield Mazzotta's NPI number?
Dr. Michael Grandfield Mazzotta's NPI number is 1841427572. It was assigned on June 21, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Grandfield Mazzotta?
Dr. Michael Grandfield Mazzotta is an internist in Portland, Oregon. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Michael Grandfield Mazzotta practice?
Dr. Mazzotta practices at 4212 N.E. Broadway, Portland, OR 97213. Dr. Mazzotta's primary practice is The Oregon Clinic Broadway Medical in Portland, Oregon. Dmand AI also links Dr. Mazzotta to 2 group practices and clinics and 2 medical groups.
What is Dr. Michael Grandfield Mazzotta's office phone number?
The practice phone on file for Dr. Mazzotta is (503) 331-7646.
What is Dr. Michael Grandfield Mazzotta's medical license number?
Dr. Mazzotta holds Oregon license 173217.
Which hospitals is Dr. Michael Grandfield Mazzotta affiliated with?
Dr. Mazzotta is affiliated with Kaiser Permanente Sunnyside Medical Center.
What medical group is Dr. Michael Grandfield Mazzotta part of?
Dr. Mazzotta is linked to Kaiser Permanente Northwest. Dmand AI links Dr. Mazzotta to 2 more medical groups.
Does Dr. Michael Grandfield Mazzotta accept Medicare?
Yes. CMS lists Dr. Mazzotta as accepting Medicare assignment.
Where did Dr. Michael Grandfield Mazzotta go to medical school?
Dr. Mazzotta graduated from University of Massachusetts Medical School in 2009.
What drugs does Dr. Michael Grandfield Mazzotta prescribe most?
In 2024 Medicare Part D data, Dr. Mazzotta's most prescribed drugs by claims were Paxlovid, Prednisone and Albuterol Sulfate Hfa.
Has Dr. Michael Grandfield Mazzotta received payments from drug or device companies?
CMS Open Payments shows $48 in general payments to Dr. Mazzotta from 2 companies from 2018 to 2019. The largest total came from Sobi, Inc.
How long has Dr. Michael Grandfield Mazzotta been practicing?
Dr. Mazzotta graduated from medical school in 2009, 17 years ago.
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