2026 NPPES data Hospitalist Physician NPI 1821528894 MD
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RIA ROBERTS, MD

Hospitalist Physician in LOWELL, Massachusetts. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
3K
Medicare Part D claims · 270 beneficiaries · Hospitalist Physician avg: 888
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

RIA ROBERTS, MD filed 2,855 Medicare Part D claims in 2023 as a Hospitalist Physician in LOWELL, Massachusetts, prescribing 84% generic.

3K
Part D claims, 2023
84%
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.

RIA ROBERTS, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

2,855 Top 12% higher than 88% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

RIA ROBERTS, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — 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 RIA ROBERTS, MD?

Quality data not reported

NPI registry status

Active

Issued 06/13/2017

NPI 1821528894

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Medicare Part D claims

2,855 222% vs specialty avg

2023 prescription claims

Specialty avg: 888

Specialty distribution in Massachusetts

How Hospitalist Physician compares to other specialties among Massachusetts providers

Massachusetts providers

Hospitalist Physician share within Massachusetts

1. Hospitalist Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hospitalist Physician share within Massachusetts

Specialty board-certification context

Estimated specialty board-certified rate — Hospitalist Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Hospitalist Physician ABMS/AOA estimate

Est. board-certified rate (Hospitalist Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Hospitalist Physician) — ABMS / AOA estimate

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).

RIA ROBERTS, MD appears in the CMS NPPES registry as a Hospitalist Physician provider holding MD credentials at 161 JACKSON ST, LOWELL, MA, 01852, with a listed phone of (978) 937-9700. NPI 1821528894 was issued on 06/13/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ROBERTS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 2,855 prescription claims written by this provider, covering 270 Medicare beneficiaries and totaling roughly $367K in drug spend, split 16% brand-name and 84% generic by claim count, with an opioid prescribing rate of 0.7%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 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

161 JACKSON ST
LOWELL, MA 01852

Provider Details

NPI 1821528894
Specialty Hospitalist Physician
Credentials MD
Gender Female
NPI Issued 06/13/2017

Hospital and facility affiliations

Facilities where RIA ROBERTS, 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.

HARVARD MEDICAL FACULTY PHYS AT BETH ISRAEL DEACONESS MED CTR INC
BOSTON, MA
LOWELL COMMUNITY HEALTH CENTER, INC.
LOWELL, MA

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 — Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 — they are NOT specific to RIA ROBERTS, MD. To verify RIA ROBERTS, MD's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases

BORIM 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 Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

RIA ROBERTS, MD — brand share 16.0%
Specialty average (est.)

16% brand-name claims vs 84% generic, on 2,855 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.

2,855
Total Claims
$367K
Total Drug Cost
270
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,720
Total Day Supply
134,224
Brand vs Generic
16% brand / 84% generic
Brand Drug Cost
$311K
Generic Drug Cost
$54K
Opioid Claims
21 (0.7% rate)
Antibiotic Claims
21

Patient Demographics

Average Patient Age
69.2 years
Avg HCC Risk Score
1.56
Gender Split
60% female / 40% male
Age Distribution
<65: 61, 65-74: 142, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What RIA ROBERTS, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
229
Gabapentin
119
Diclofenac Sodium
97
Levothyroxine Sodium
91
Lisinopril
90
Amlodipine Besylate
89
Omeprazole
76
Metoprolol Succinate
67
Fluticasone Propionate
61
Metformin Hcl
50

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Hospitalist Physician Overview

How RIA ROBERTS, MD fits within the Hospitalist Physician landscape nationally.

16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider

RIA ROBERTS, MD's 2,855 claims are above the specialty average of 888.

Nearby Hospitalist Physician Providers in Massachusetts

Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as ROBERTS.

Compare Hospitalist Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is RIA ROBERTS, MD's specialty?
RIA ROBERTS, MD specializes in Hospitalist Physician and practices in LOWELL, Massachusetts. Credentials: MD.
How much does RIA ROBERTS, MD prescribe under Medicare Part D?
In 2023, RIA ROBERTS, MD wrote 2,855 Medicare Part D claims totaling $367K in drug costs for 270 beneficiaries.
Where is RIA ROBERTS, MD located?
RIA ROBERTS, MD is located at 161 JACKSON ST, LOWELL, MA, 01852. Phone: (978) 937-9700.
What is RIA ROBERTS, MD's NPI number?
RIA ROBERTS, MD's National Provider Identifier (NPI) is 1821528894, issued on 06/13/2017.
Does RIA ROBERTS, MD prescribe more brand-name or generic drugs?
RIA ROBERTS, MD's prescribing is 16% brand-name and 84% generic drugs by claim count, with $311K in brand drug costs.
Does RIA ROBERTS, MD prescribe opioids?
Yes, RIA ROBERTS, MD had 21 opioid claims in 2023 with an opioid prescribing rate of 0.7%.
How many Hospitalist Physician providers are there in the US?
There are 16,825 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 RIA ROBERTS, MD prescribe most often?
Based on 2023 Medicare Part D data, RIA ROBERTS, MD's most frequently prescribed drugs include Atorvastatin Calcium, Gabapentin, Diclofenac Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does RIA ROBERTS, MD accept Medicare?
RIA ROBERTS, MD appears in CMS Medicare data with 2,855 Part D claims and 270 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify RIA ROBERTS, MD's credentials?
RIA ROBERTS, MD's NPI is 1821528894 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

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.
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