Oren Mason, M.D.
NPI 1104985332 · Family Medicine Physician · Grand Rapids, MI
Oren Mason, M.D. is a Family Medicine Physician provider in Grand Rapids, MI (NPI 1104985332).
Provider details
- NPI number
- 1104985332
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 4301053157 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphet Er | 126 | 20 |
| Atomoxetine Hcl | 57 | 15 |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphetamine | 43 | — |
| Methylphenidate Hclbrand: Methylphenidate Er | 39 | — |
| Bupropion Hclbrand: Bupropion Xl | 30 | — |
| Hydroxyzine Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$19,952 across 22 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-06
- Last updated
- 2007-07-08
Frequently asked questions
- What is Oren Mason's NPI number?
- Oren Mason's National Provider Identifier (NPI) is 1104985332, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Oren Mason's specialty?
- Oren Mason is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Oren Mason located?
- Oren Mason's practice location on file with NPPES is 3206 Eastern Ave Se, Grand Rapids, MI 49508-2403.
- What is Oren Mason's phone number?
- The practice phone number listed in the NPPES registry for Oren Mason is (616) 475-7922.
- Is Oren Mason's NPI active?
- Yes — Oren Mason's NPI (1104985332) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.