NPI registry status
Active
2026 NPPES data Adult Medicine Physician NPI 1720575988 MD
Verify on CMS → Maryin Altamirano, MD
Adult Medicine Physician in Beaumont, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 2,481 in Adult Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
3K
Medicare Part D claims · 408 beneficiaries · Adult Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
85.2/100
▲ 2 pts above national avg 83.1 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Maryin Altamirano, MD reported a CMS MIPS final score of 85.2/100 - above the 83.1 national average - and filed 3,283 Medicare Part D claims in 2023.
- 85.2/100
- MIPS score · +2 vs avg
- 3K
- Part D claims, 2023
- 87%
- generic prescribing
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Maryin Altamirano, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
85 49th percentile higher than 49% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Maryin Altamirano, MD sits
This provider among adult medicine physician peers
Across the 216 adult medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Maryin Altamirano, MD writes more Part D claims than 64% of them and scores higher on MIPS quality than 48% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one adult medicine physician peer from a representative sample of 60; the gold marker is Maryin Altamirano, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Maryin Altamirano, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Maryin Altamirano, MD?
High performer (top quartile)Primary specialty
Adult Medicine Physician
Medicare Part D claims
3,283 17% vs specialty avg
MIPS final score
85.2/100 2.1 pts vs avg
Specialty distribution in California
How Adult Medicine Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Maryin Altamirano, MD's 2023 MIPS final score plotted against the Adult Medicine Physician national average
- MIPS Final Score
- 85.2/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Adult Medicine Physician) - 85.2/100 vs national avg 83.1
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Maryin Altamirano, MD appears in the CMS NPPES registry as a Adult Medicine Physician provider holding MD credentials at 81 HIGHLAND SPRINGS AVE STE 301, Beaumont, CA, 92223, with a listed phone of (951) 846-2611. NPI 1720575988 was issued on 04/13/2018.
Medicare Part D records for calendar year 2023 show 3,283 prescription claims written by this provider, covering 408 Medicare beneficiaries and totaling roughly $285K in drug spend, split 12% brand-name and 87% generic by claim count, with an opioid prescribing rate of 3.5%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 85.2/100 for the 2023 performance year (Quality 71.8, Cost 64.5), compared with the national average of 83.1.
Adult Medicine Physician is a narrow specialty nationwide, with 2,481 enrolled providers across 52 states and an average of 2,807 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1720575988 |
|---|---|
| Specialty | Adult Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 04/13/2018 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
85.186
Final Score
Avg: 83.1
71.8166
Quality
64.5435
Cost
82
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Maryin Altamirano, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Faculty Physicians And Surgeons OF Llusm
Loma Linda, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Maryin Altamirano, MD. To verify Maryin Altamirano, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Maryin Altamirano, MD - brand share 12.0%
Adult Medicine Physician average
12% brand-name claims vs 87% generic, on 3,283 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
3,283
Total Claims
$285K
Total Drug Cost
408
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 7,569
- Total Day Supply
- 220,810
- Brand vs Generic
- 12% brand / 87% generic
- Brand Drug Cost
- $208K
- Generic Drug Cost
- $76K
- Opioid Claims
- 116 (3.5% rate)
- Antibiotic Claims
- 39
Patient Demographics
- Average Patient Age
- 73.6 years
- Avg HCC Risk Score
- 1.49
- Gender Split
- 62% female / 38% male
- Age Distribution
- <65: 42, 65-74: 175, 75-84: 143, 85+: 48
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Maryin Altamirano, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
201 claims
- Levothyroxine Sodium
Levothyroxine Sodium
169 claims
- Metformin Hcl
Metformin Hcl
123 claims
- Amlodipine Besylate
Amlodipine Besylate
121 claims
- Trazodone Hcl
Trazodone Hcl
119 claims
- Lisinopril
Lisinopril
111 claims
- Gabapentin
Gabapentin
106 claims
- Losartan Potassium
Losartan Potassium
85 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 201 |
| Levothyroxine Sodium | 169 |
| Metformin Hcl | 123 |
| Amlodipine Besylate | 121 |
| Trazodone Hcl | 119 |
| Lisinopril | 111 |
| Gabapentin | 106 |
| Losartan Potassium | 85 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 73 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 72 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Adult Medicine Physician Overview
How Maryin Altamirano, MD fits within the Adult Medicine Physician landscape nationally.
2,481
Adult Medicine Physician Providers in US
52
States with Adult Medicine Physician
2,807
Avg Claims per Provider
Maryin Altamirano, MD's 3,283 claims are above the specialty average of 2,807.
Nearby Adult Medicine Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Altamirano.
Dr. Mina Abazari
M.D.
San Juan Capistrano, CA
Dr. Derrick Adams
D.O.
Lincoln, CA
Dr. Abhishek Agarwal
M.D.
Roseville, CA
Dr. Marie Agleham
MD
Union City, CA
Dr. Ahmad Ahmadzia
M.D.
Fair Oaks, CA
Compare Adult Medicine Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Adult Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Maryin Altamirano, MD's specialty? ▼
Maryin Altamirano, MD specializes in Adult Medicine Physician and practices in Beaumont, California. Credentials: MD.
How much does Maryin Altamirano, MD prescribe under Medicare Part D? ▼
In 2023, Maryin Altamirano, MD wrote 3,283 Medicare Part D claims totaling $285K in drug costs for 408 beneficiaries.
What is Maryin Altamirano, MD's Medicare quality score? ▼
Maryin Altamirano, MD has a CMS MIPS Final Score of 85.2/100 (Quality: 71.8, Cost: 64.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Maryin Altamirano, MD located? ▼
Maryin Altamirano, MD is located at 81 HIGHLAND SPRINGS AVE STE 301, Beaumont, CA, 92223. Phone: (951) 846-2611.
What is Maryin Altamirano, MD's NPI number? ▼
Maryin Altamirano, MD's National Provider Identifier (NPI) is 1720575988, issued on 04/13/2018.
Does Maryin Altamirano, MD prescribe more brand-name or generic drugs? ▼
Maryin Altamirano, MD's prescribing is 12% brand-name and 87% generic drugs by claim count, with $208K in brand drug costs.
Does Maryin Altamirano, MD prescribe opioids? ▼
Yes, Maryin Altamirano, MD had 116 opioid claims in 2023 with an opioid prescribing rate of 3.5%.
How many Adult Medicine Physician providers are there in the US? ▼
There are 2,481 Adult Medicine Physician providers across 52 states in the US. The average Adult Medicine Physician provider writes 2,807 Medicare Part D claims per year.
What drugs does Maryin Altamirano, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Maryin Altamirano, MD's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Maryin Altamirano, MD accept Medicare? ▼
Maryin Altamirano, MD appears in CMS Medicare data with 3,283 Part D claims and 408 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Maryin Altamirano, MD's credentials? ▼
Maryin Altamirano, MD's NPI is 1720575988 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.