Douglas Ferris, D.M.D.
NPI 1306850391 · Endodontics · Madison, WI
Douglas Ferris, D.M.D. is a Endodontics provider in Madison, WI (NPI 1306850391).
Provider details
- NPI number
- 1306850391
- Entity type
- Individual
- Primary specialty
- EndodonticsDental Providers
- Credential
- D.M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 5797-015 (WI)
Specialties & taxonomies
Dental Providers
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 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin | 128 | 115 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 29 | 27 |
| Chlorhexidine Gluconate | 27 | 25 |
| Clindamycin Hcl | 18 | 17 |
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
- 2006-07-28
- Last updated
- 2017-06-14
Frequently asked questions
- What is Douglas Ferris's NPI number?
- Douglas Ferris's National Provider Identifier (NPI) is 1306850391, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Ferris's specialty?
- Douglas Ferris is listed in the NPPES registry with a primary specialty of Endodontics (Dental Providers).
- Where is Douglas Ferris located?
- Douglas Ferris's practice location on file with NPPES is 2418 Crossroads Dr, Madison, WI 53718-7995.
- What is Douglas Ferris's phone number?
- The practice phone number listed in the NPPES registry for Douglas Ferris is (608) 442-3300.
- Is Douglas Ferris's NPI active?
- Yes — Douglas Ferris's NPI (1306850391) is active in the NPPES registry as of the last update on 2017-06-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.