Mark Chandler, MD
NPI 1265452270 · Psychiatry Physician · Durham, NC
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Chandler, MD is a Psychiatry Physician provider in Durham, NC (NPI 1265452270).
Provider details
- NPI number
- 1265452270
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 31000 (NC)
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
19 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
1,517 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) |
|---|---|---|
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 804 | $70 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 713 | $85 |
Typical Medicare-allowed amounts for these services range $70–$85 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 102 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Risperidone | 767 | 62 |
| Clonazepam | 633 | 66 |
| Lorazepam | 612 | 70 |
| Aripiprazole | 567 | 55 |
| Olanzapine | 497 | 48 |
| Duloxetine Hcl | 475 | 53 |
| Quetiapine Fumarate | 350 | 28 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,771 across 164 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
- 2006-07-20
- Last updated
- 2018-03-07
Frequently asked questions
- What is Mark Chandler's NPI number?
- Mark Chandler's National Provider Identifier (NPI) is 1265452270, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Chandler's specialty?
- Mark Chandler is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Chandler located?
- Mark Chandler's practice location on file with NPPES is 3713 University Dr, Durham, NC 27707-6202.
- What is Mark Chandler's phone number?
- The practice phone number listed in the NPPES registry for Mark Chandler is (919) 401-6212.
- Does Mark Chandler accept Medicare?
- Mark Chandler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Chandler's NPI active?
- Yes — Mark Chandler's NPI (1265452270) is active in the NPPES registry as of the last update on 2018-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.