Byron L. Marshall, NPC
- Medicare patients, 2024
- 79
- Part D claims, 2024
- 12
- MIPS score, 2024
- 98
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 22 Bramhall St, Portland, ME 04102
- Practice phone
- Call (207) 662-0111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Byron Marshall'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.
Byron L. Marshall is a family nurse practitioner in Portland, Maine
Byron Marshall practices at MaineHealth Maine Medical Center in Portland, Maine, part of MaineHealth.
Byron Marshall's NPI, 1780819110, was assigned on May 29, 2009. Byron Marshall holds Maine license CNP171130.
- NPI
- 1780819110NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537426663
- NPI enumeration date
- May 29, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (207) 662-0111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Byron L. Marshall practices at MaineHealth Maine Medical Center in Portland, Maine
Byron Marshall's primary practice is MaineHealth Maine Medical Center, at 22 Bramhall St, Portland, ME 04102 in Cumberland County. The practice phone is (207) 662-0111.
- MaineHealth Maine Medical Center22 Bramhall St, Portland, ME 04102 · Cumberland CountyPhone(207) 662-0111
Source: Dmand AI Affiliation Data
Byron L. Marshall is affiliated with 1 site of care and 2 medical groups
Byron Marshall's primary practice is MaineHealth Maine Medical Center in Portland, Maine, part of MaineHealth. The medical group on file is MaineHealth Primary Care - Family Medicine - Portland. Dmand AI also links Byron Marshall to 1 more medical group, named with a free account. Byron Marshall's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Byron L. Marshall's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Byron Marshall practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MaineHealth Maine Medical Center | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Byron L. Marshall is one of 1,081 family nurse practitioners in Maine
Family is Byron Marshall's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Byron Marshall is licensed in Maine.
Specialties and state licenses
- Family nurse practitioner, MainePrimary
Family nurse practitioners near Byron Marshall
Counts of family nurse practitioners 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
Byron L. Marshall treated 79 Medicare patients in 2024, average age 74
CMS counts 79 Medicare patients who saw Byron Marshall in 2024. The largest group is 75 to 84, with 24 patients. 75% of them have high blood pressure, and 68% have high cholesterol. 48% are also on Medicaid. Their average risk score is 2.80, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Byron Marshall's median patient age at 74, with 42% women.
Byron Marshall's Medicare patients by age, 2024
Byron Marshall's Medicare patients by sex, 2024
- Women4759%
- Men3241%
Chronic conditions among Byron Marshall's Medicare patients, 2024
- High blood pressure75%
- High cholesterol68%
- Heart failure58%
- Anxiety56%
- Ischemic heart disease49%
- Mood disorders49%
- Atrial fibrillation48%
- COPD46%
Share of Medicare patients with each condition. A patient can have several.
Byron Marshall's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women42%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Byron L. Marshall wrote 12 Medicare Part D claims in 2024
In 2024, Byron Marshall wrote 12 Medicare Part D claims.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Byron L. Marshall scored 98 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 98 out of 100 for Byron Marshall for performance year 2024, reported through an alternative payment model (APM). Byron Marshall accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Byron Marshall as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Byron Marshall's MIPS scores, performance year 2024
- 98of 100Final score
- 83.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
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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Sources for Byron L. Marshall'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | 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) |
| 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 Byron L. Marshall
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Byron L. Marshall's NPI number?
Byron L. Marshall's NPI number is 1780819110. It was assigned on May 29, 2009, and it is active in the NPI Registry.
What does Byron L. Marshall specialize in?
Byron L. Marshall is a family nurse practitioner in Portland, Maine. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Byron L. Marshall practice?
Byron Marshall practices at 22 Bramhall St, Portland, ME 04102. Byron Marshall's primary practice is MaineHealth Maine Medical Center in Portland, Maine, part of MaineHealth. Dmand AI also links Byron Marshall to 1 medical group.
What is Byron L. Marshall's office phone number?
The practice phone on file for Byron Marshall is (207) 662-0111.
What is Byron L. Marshall's medical license number?
Byron Marshall holds Maine license CNP171130.
Which hospitals is Byron L. Marshall affiliated with?
Byron Marshall practices at MaineHealth Maine Medical Center in Portland, Maine.
What medical group is Byron L. Marshall part of?
Byron Marshall is linked to MaineHealth Primary Care - Family Medicine - Portland. Dmand AI links Byron Marshall to 1 more medical group.
Does Byron L. Marshall accept Medicare?
Yes. CMS lists Byron Marshall as accepting Medicare assignment.
Does Byron L. Marshall offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Byron Marshall as offering telehealth services.
What is Byron L. Marshall's MIPS score?
Byron Marshall's MIPS final score for performance year 2024 is 98 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Byron L. Marshall see?
CMS counts 79 Medicare patients who saw Byron Marshall in 2024, with an average age of 74.
How long has Byron L. Marshall been practicing?
Byron Marshall graduated from medical school in 2017, 9 years ago.
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