NPI registry status
Active
2026 NPPES data Hospitalist Physician NPI 1669492104 MD
Verify on CMS → Marilyn Grams, MD
Hospitalist Physician in Billings, Montana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,938 in Hospitalist 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
168
Medicare Part D claims · 35 beneficiaries · Hospitalist Physician avg: 888
MIPS score
61.2/100
▼ 22 pts below national avg 83.1 · Mid-tier
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Marilyn Grams, MD reported a CMS MIPS final score of 61.2/100 - below the 83.1 national average - and filed 168 Medicare Part D claims in 2023.
- 61.2/100
- MIPS score · -22 vs avg
- 168
- Part D claims, 2023
- 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.
Marilyn Grams, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
61 6th percentile higher than 6% 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 Marilyn Grams, MD sits
This provider among hospitalist physician peers
Across the 4,437 hospitalist physician providers who report both Medicare Part D prescribing and a MIPS quality score, Marilyn Grams, MD writes more Part D claims than 35% of them and scores higher on MIPS quality than 3% - placing this provider in the lower-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 hospitalist physician peer from a representative sample of 60; the gold marker is Marilyn Grams, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Marilyn Grams, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Marilyn Grams, MD?
Below national averagePrimary specialty
Hospitalist Physician
Medicare Part D claims
168 81% vs specialty avg
MIPS final score
61.2/100 21.9 pts vs avg
Specialty distribution in Montana
How Hospitalist Physician compares to other specialties among Montana providers
Medicare quality performance, MIPS
Marilyn Grams, MD's 2023 MIPS final score plotted against the Hospitalist Physician national average
- MIPS Final Score
- 61.2/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Hospitalist Physician) - 61.2/100 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).
Marilyn Grams, MD appears in the CMS NPPES registry as a Hospitalist Physician provider holding MD credentials at 2825 8TH AVE N, Billings, MT, 59101, with a listed phone of (406) 238-2500. NPI 1669492104 was issued on 07/20/2006.
Medicare Part D records for calendar year 2023 show 168 prescription claims written by this provider, covering 35 Medicare beneficiaries and totaling roughly $6K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 61.2/100 for the 2023 performance year (Quality 71.8, Cost 15.4), compared with the national average of 83.1.
Hospitalist Physician is a mid-sized specialty nationwide, with 16,938 enrolled providers across 54 states and an average of 888 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 | 1669492104 |
|---|---|
| Specialty | Hospitalist Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 07/20/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
61.1748
Final Score
Avg: 83.1
71.8372
Quality
15.412
Cost
80
Promoting Interoperability
Reporting: Group practice
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
168
Total Claims
$6K
Total Drug Cost
35
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 177
- Total Day Supply
- 3,021
- Generic Drug Cost
- $2K
- Antibiotic Claims
- 16
Patient Demographics
- Average Patient Age
- 73.1 years
- Avg HCC Risk Score
- 1.69
- Gender Split
- 51% female / 49% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Marilyn Grams, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
18 claims
- Mirtazapine
Mirtazapine
18 claims
- Carbidopa-Levodopa
Carbidopa-Levodopa
17 claims
- Metoprolol Succinate
Metoprolol Succinate
17 claims
- Omeprazole
Omeprazole
17 claims
- Venlafaxine Hcl Er
Venlafaxine Hcl Er
17 claims
| Drug | Claims |
|---|---|
| Gabapentin | 18 |
| Mirtazapine | 18 |
| Carbidopa-Levodopa Carbidopa/Levodopa | 17 |
| Metoprolol Succinate | 17 |
| Omeprazole | 17 |
| Venlafaxine Hcl Er Venlafaxine Hcl | 17 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hospitalist Physician Overview
How Marilyn Grams, MD fits within the Hospitalist Physician landscape nationally.
16,938
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider
Marilyn Grams, MD's 168 claims are below the specialty average of 888.
Nearby Hospitalist Physician Providers in Montana
Other clinicians with the same primary specialty enrolled in Montana, drawn from the same CMS NPPES roster as Grams.
Dr. Kylie Abeson
MD, MPH
Billings, MT
Dr. Rebecca Anderson
MD
Missoula, MT
Dr. Sean Banks
DO
Great Falls, MT
Dr. Shelly Basye
M.D.
Billings, MT
Dr. Jason Bechard
MD
Kalispell, MT
Compare Hospitalist 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 Montana medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Hospitalist 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 Marilyn Grams, MD's specialty? ▼
Marilyn Grams, MD specializes in Hospitalist Physician and practices in Billings, Montana. Credentials: MD.
How much does Marilyn Grams, MD prescribe under Medicare Part D? ▼
In 2023, Marilyn Grams, MD wrote 168 Medicare Part D claims totaling $6K in drug costs for 35 beneficiaries.
What is Marilyn Grams, MD's Medicare quality score? ▼
Marilyn Grams, MD has a CMS MIPS Final Score of 61.2/100 (Quality: 71.8, Cost: 15.4). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Marilyn Grams, MD located? ▼
Marilyn Grams, MD is located at 2825 8TH AVE N, Billings, MT, 59101. Phone: (406) 238-2500.
What is Marilyn Grams, MD's NPI number? ▼
Marilyn Grams, MD's National Provider Identifier (NPI) is 1669492104, issued on 07/20/2006.
How many Hospitalist Physician providers are there in the US? ▼
There are 16,938 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does Marilyn Grams, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Marilyn Grams, MD's most frequently prescribed drugs include Gabapentin, Mirtazapine, Carbidopa-Levodopa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Marilyn Grams, MD accept Medicare? ▼
Marilyn Grams, MD appears in CMS Medicare data with 168 Part D claims and 35 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Marilyn Grams, MD's credentials? ▼
Marilyn Grams, MD's NPI is 1669492104 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.