NPI registry status
Active
2026 NPPES data Oral and Maxillofacial Pathology Dentistry NPI 1518003094 D.D.S.
Verify on CMS → Mark Grubb, D.D.S.
Oral and Maxillofacial Pathology Dentistry in Bangor, Maine.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 688 in Oral and Maxillofacial Pathology Dentistry, 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
69
Medicare Part D claims · 42 beneficiaries · Oral and Maxillofacial Pathology Dentistry avg: 303
Industry payments
$35.72
1 payments · CMS Open Payments (Sunshine Act)
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
Mark Grubb, D.D.S. filed 69 Medicare Part D claims in 2023 as a Oral and Maxillofacial Pathology Dentistry in Bangor, Maine.
- 69
- Part D claims, 2023
- $35.72
- industry payments (Sunshine Act)
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.
Mark Grubb, D.D.S.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
69 0th percentile higher than 0% of 1,370,886 prescribers
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
What does the federal data show about Mark Grubb, D.D.S.?
Quality data not reportedPrimary specialty
Oral and Maxillofacial Pathology Dentistry
Medicare Part D claims
69 77% vs specialty avg
Specialty distribution in Maine
How Oral and Maxillofacial Pathology Dentistry compares to other specialties among Maine providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Oral and Maxillofacial Pathology Dentistry. Verify directly:
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).
Mark Grubb, D.D.S. appears in the CMS NPPES registry as an Oral and Maxillofacial Pathology Dentistry provider holding D.D.S. credentials at 37 BOWER ST, Bangor, ME, 04401, with a listed phone of (207) 945-5691. NPI 1518003094 was issued on 01/30/2007.
Medicare Part D records for calendar year 2023 show 69 prescription claims written by this provider, covering 42 Medicare beneficiaries and totaling roughly $279 in drug spend, with an opioid prescribing rate of 15.9%.
Oral and Maxillofacial Pathology Dentistry is a narrow specialty nationwide, with 688 enrolled providers across 48 states and an average of 303 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 | 1518003094 |
|---|---|
| Specialty | Oral and Maxillofacial Pathology Dentistry |
| Credentials | D.D.S. |
| Gender | Male |
| NPI Issued | 01/30/2007 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Mark Grubb, D.D.S.. Source: openpaymentsdata.cms.gov.
Total received
$36
Largest payer
Straumann USA LLC
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
69
Total Claims
$279
Total Drug Cost
42
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 69
- Total Day Supply
- 580
- Brand Drug Cost
- $0
- Generic Drug Cost
- $279
- Opioid Claims
- 11 (15.9% rate)
- Antibiotic Claims
- 44
Patient Demographics
- Average Patient Age
- 73.7 years
- Avg HCC Risk Score
- 0.99
- Gender Split
- 52% female / 48% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Amoxicillin | 35 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Oral and Maxillofacial Pathology Dentistry in ME →
All providers in Maine →
Compare specialties →
Oral and Maxillofacial Pathology Dentistry Overview
How Mark Grubb, D.D.S. fits within the Oral and Maxillofacial Pathology Dentistry landscape nationally.
688
Oral and Maxillofacial Pathology Dentistry Providers in US
48
States with Oral and Maxillofacial Pathology Dentistry
303
Avg Claims per Provider
Mark Grubb, D.D.S.'s 69 claims are below the specialty average of 303.
Nearby Oral and Maxillofacial Pathology Dentistry Providers in Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Grubb.
Dr. Paul Auclair
M.D.
Portland, ME
Dr. Molly Cohen
DMD
Portland, ME
Dr. Russell Collett
DDS
Portland, ME
Dr. William Deighan
D.M.D.
Bangor, ME
Dr. Luke L'Heureux
D.M.D.
Waterville, ME
Compare Oral and Maxillofacial Pathology Dentistry 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 Maine medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Oral and Maxillofacial Pathology Dentistry 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Maine
Frequently Asked Questions
What is Mark Grubb, D.D.S.'s specialty? ▼
Mark Grubb, D.D.S. specializes in Oral and Maxillofacial Pathology Dentistry and practices in Bangor, Maine. Credentials: D.D.S..
How much does Mark Grubb, D.D.S. prescribe under Medicare Part D? ▼
In 2023, Mark Grubb, D.D.S. wrote 69 Medicare Part D claims totaling $279 in drug costs for 42 beneficiaries.
Where is Mark Grubb, D.D.S. located? ▼
Mark Grubb, D.D.S. is located at 37 BOWER ST, Bangor, ME, 04401. Phone: (207) 945-5691.
What is Mark Grubb, D.D.S.'s NPI number? ▼
Mark Grubb, D.D.S.'s National Provider Identifier (NPI) is 1518003094, issued on 01/30/2007.
Does Mark Grubb, D.D.S. prescribe opioids? ▼
Yes, Mark Grubb, D.D.S. had 11 opioid claims in 2023 with an opioid prescribing rate of 15.9%.
How many Oral and Maxillofacial Pathology Dentistry providers are there in the US? ▼
There are 688 Oral and Maxillofacial Pathology Dentistry providers across 48 states in the US. The average Oral and Maxillofacial Pathology Dentistry provider writes 303 Medicare Part D claims per year.
What drugs does Mark Grubb, D.D.S. prescribe most often? ▼
Based on 2023 Medicare Part D data, Mark Grubb, D.D.S.'s most frequently prescribed drugs include Amoxicillin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Grubb, D.D.S. accept Medicare? ▼
Mark Grubb, D.D.S. appears in CMS Medicare data with 69 Part D claims and 42 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Grubb, D.D.S.'s credentials? ▼
Mark Grubb, D.D.S.'s NPI is 1518003094 with credentials D.D.S.. 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.
- 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.