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Dr. Isaac Saul Lopez, MD
NPI1831694785PAC ID8628471638
- Medicare services, 2024
- 320
- Medicare patients, 2024
- 104
- Part D claims, 2024
- 113
- Publications
- 1
- MIPS score, 2024
- 98
- 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 Dr. Lopez's professional email, personal email and mobile number
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Dr. Isaac Saul Lopez is a hospitalist in Portland, Maine
Dr. Lopez practices at MaineHealth Maine Medical Center in Portland, Maine, part of MaineHealth.
Dr. Lopez's NPI, 1831694785, was assigned on March 23, 2018. Dr. Lopez graduated from Warren Alpert Medical School of Brown University in 2018. Dr. Lopez holds Alaska license 175787.
NPI and contact details
- NPI
- 1831694785NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8628471638
- NPI enumeration date
- March 23, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (207) 662-0111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Isaac Saul Lopez practices at MaineHealth Maine Medical Center in Portland, Maine
Dr. Lopez'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
Dr. Isaac Saul Lopez is affiliated with 1 site of care and 2 medical groups
Dr. Lopez'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 Dr. Lopez to 1 more medical group, named with a free account. Dr. Lopez's employer is on file too: a hospital.
MaineHealth Primary Care - Family Medicine - Portland1 medical groupName with a free accountEmployer: hospitalName with a free account
See all 3 affiliations for Dr. LopezSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Isaac Saul Lopez's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lopez 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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Dr. Isaac Saul Lopez is one of 180 hospitalists in Maine
Hospitalist is Dr. Lopez's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Lopez is licensed in Alaska.
Specialties and state licenses
- Hospitalist, AlaskaPrimary
Hospitalists near Dr. Lopez
Counts of hospitalists with a Dmand AI profile, by place and practice. Each opens the list.
180hospitalists in Maine69hospitalists in Portland60hospitalists at MaineHealth Maine Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Isaac Saul Lopez billed Medicare for 320 services in 2024
CMS data shows 320 Medicare services from Dr. Lopez across 3 procedure codes in 2024, for 104 Medicare patients. Medicare paid $29,965 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024320
Medicare patients104
Paid by Medicare$29,965
Procedure codes3
Dr. Lopez's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,0242024: 32069%
Dr. Lopez compared with the Maine median for hospitalists, 2024
- Dr. Lopez
- Maine median
- Medicare services
- 320vs 26322% above
- Medicare patients
- 104vs 12416% below
- Part D claims
- 202vs 543.7 times
Medians across 182 hospitalists in Maine with Dmand AI profiles that report each measure.
Dr. Lopez'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. Lopez and other hospitalists in Maine.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Isaac Saul Lopez treated 104 Medicare patients in 2024, average age 75
CMS counts 104 Medicare patients who saw Dr. Lopez in 2024. The largest group is 75 to 84, with 38 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 38% are also on Medicaid. Their average risk score is 2.95, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Lopez's median patient age at 70, with 48% women.
Medicare patients, 2024104
Average age75
Average risk score2.95
Also on Medicaid38%
Dr. Lopez's Medicare patients by age, 2024
Dr. Lopez's Medicare patients by sex, 2024
- Women4644%
- Men5856%
Chronic conditions among Dr. Lopez's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Anxiety55%
- Ischemic heart disease55%
- Mood disorders54%
- Heart failure52%
- Arthritis49%
- Chronic kidney disease48%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lopez's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Isaac Saul Lopez wrote 113 Medicare Part D claims in 2024
In 2024, Dr. Lopez wrote 113 Medicare Part D claims for 41 patients. 78% of them were for generic drugs. They cover 12 drugs, with $17,226 in total drug cost. In 2022, CMS named 359 claims across 19 drugs.
Part D claims, 2024113
Drugs named by CMS12
Total drug cost$17,226
Part D patients41
Dr. Lopez's Part D claims by kind of drug, 2024
- Generic88 claims78%
- Brand-name25 claims22%
Dr. Lopez's most prescribed drugs by claims, 2023
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. Lopez's Part D claims, 2024
- Antibiotics21%24 of 113 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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 3592023: 20244%
Drugs named by CMS: 12 in 2023, 19 in 2022.
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. Isaac Saul Lopez 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 Dr. Lopez for performance year 2024, reported through an alternative payment model (APM). Dr. Lopez accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Lopez'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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Dr. Isaac Saul Lopez has 1 publication on record
Dmand AI links 1 paper to Dr. Lopez in 2024. Dr. Lopez's most frequent co-authors are John Eric Demko, MD, Timothy Judson, MD and Kathleen D. Liu, MD.
Papers1
Dr. Lopez's most frequent co-authors
- John Eric Demko, MD1 shared paper
- Timothy Judson, MD1 shared paper
- Kathleen D. Liu, MD1 shared paper
Recent publications by Dr. Lopez
See who Dr. Lopez researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Lopez works with, so you can find a warm path to the right hospitalists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Isaac Saul Lopez graduated from Warren Alpert Medical School of Brown University
Dr. Lopez graduated from Warren Alpert Medical School of Brown University in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Isaac Saul Lopez'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Isaac Saul Lopez
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. Isaac Saul Lopez's NPI number?
Dr. Isaac Saul Lopez's NPI number is 1831694785. It was assigned on March 23, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Isaac Saul Lopez?
Dr. Isaac Saul Lopez is a hospitalist in Portland, Maine. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Isaac Saul Lopez practice?
Dr. Lopez practices at 22 Bramhall St, Portland, ME 04102. Dr. Lopez's primary practice is MaineHealth Maine Medical Center in Portland, Maine, part of MaineHealth. Dmand AI also links Dr. Lopez to 1 medical group.
What is Dr. Isaac Saul Lopez's office phone number?
The practice phone on file for Dr. Lopez is (207) 662-0111.
What is Dr. Isaac Saul Lopez's medical license number?
Dr. Lopez holds Alaska license 175787.
Which hospitals is Dr. Isaac Saul Lopez affiliated with?
Dr. Lopez practices at MaineHealth Maine Medical Center in Portland, Maine.
What medical group is Dr. Isaac Saul Lopez part of?
Dr. Lopez is linked to MaineHealth Primary Care - Family Medicine - Portland. Dmand AI links Dr. Lopez to 1 more medical group.
Does Dr. Isaac Saul Lopez accept Medicare?
Yes. CMS data shows Dr. Lopez billed Medicare for 320 services in 2024, and Dr. Lopez accepts Medicare assignment.
What is Dr. Isaac Saul Lopez's MIPS score?
Dr. Lopez'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 Dr. Isaac Saul Lopez see?
CMS counts 104 Medicare patients who saw Dr. Lopez in 2024, with an average age of 75.
Show 6 more questionsShow fewer questions
What services does Dr. Isaac Saul Lopez bill to Medicare?
In 2024, Dr. Lopez's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99223).
Where did Dr. Isaac Saul Lopez go to medical school?
Dr. Lopez graduated from Warren Alpert Medical School of Brown University in 2018.
What drugs does Dr. Isaac Saul Lopez prescribe most?
In 2023 Medicare Part D data, Dr. Lopez's most prescribed drugs by claims were Gabapentin, Tamsulosin HCl and Lantus.
How long has Dr. Isaac Saul Lopez been practicing?
Dr. Lopez graduated from medical school in 2018, 8 years ago.
Does Dr. Isaac Saul Lopez do research?
Dmand AI links 1 publication to Dr. Lopez.
Who does Dr. Isaac Saul Lopez publish with?
Dr. Lopez's most frequent co-authors are John Eric Demko, MD (1 shared paper), Timothy Judson, MD (1 shared paper) and Kathleen D. Liu, MD (1 shared paper).
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