William Malarkey, M.D.
NPI 1598772691 · Endocrinology, Diabetes & Metabolism Physician · Columbus, OH
William Malarkey, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Columbus, OH (NPI 1598772691).
Provider details
- NPI number
- 1598772691
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 35029067 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 48 | 12 |
| Semaglutidebrand: Rybelsus | 17 | — |
| Liothyronine Sodium | 15 | — |
| Somatropinbrand: Omnitrope | 12 | — |
| Hydrocortisone | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-02
- Last updated
- 2024-07-08
- Certified
- 2024-07-08
Frequently asked questions
- What is William Malarkey's NPI number?
- William Malarkey's National Provider Identifier (NPI) is 1598772691, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Malarkey's specialty?
- William Malarkey is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is William Malarkey located?
- William Malarkey's practice location on file with NPPES is 410 W 10th Ave, Columbus, OH 43210-1240.
- What is William Malarkey's phone number?
- The practice phone number listed in the NPPES registry for William Malarkey is (614) 293-7677.
- Is William Malarkey's NPI active?
- Yes — William Malarkey's NPI (1598772691) is active in the NPPES registry as of the last update on 2024-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.