John Barker, M.D.
NPI 1013919117 · Orthopaedic Surgery Physician · Lone Tree, CO
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Barker, M.D. is a Orthopaedic Surgery Physician provider in Lone Tree, CO (NPI 1013919117).
Provider details
- NPI number
- 1013919117
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 38445 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
623 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 115 | $91 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 109 | $128 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 100 | $166 |
| X-Ray of Lower and Sacral Spine, 2-3 Views72100 | 62 | $41 |
| Insertion of Cage Or Mesh Device to Spine Bone and Disc Space During Spine Fusion22853 | 51 | $249 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 60 | 29 |
| Tramadol Hcl | 56 | 25 |
| Oxycodone Hcl | 54 | 28 |
| Methocarbamol | 33 | 21 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 32 | 23 |
| Meloxicam | 24 | — |
| Methylprednisolone | 22 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,239 across 26 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
- 2005-08-10
- Last updated
- 2018-12-27
Frequently asked questions
- What is John Barker's NPI number?
- John Barker's National Provider Identifier (NPI) is 1013919117, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Barker's specialty?
- John Barker is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is John Barker located?
- John Barker's practice location on file with NPPES is 10103 Ridgegate Pkwy, Lone Tree, CO 80124-5520.
- What is John Barker's phone number?
- The practice phone number listed in the NPPES registry for John Barker is (303) 225-8120.
- Does John Barker accept Medicare?
- John Barker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Barker's NPI active?
- Yes — John Barker's NPI (1013919117) is active in the NPPES registry as of the last update on 2018-12-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.