Amber Mcilwain, M.D.
NPI 1336378819 · Family Medicine Physician · Diamondhead, MS
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Amber Mcilwain, M.D. is a Family Medicine Physician provider in Diamondhead, MS (NPI 1336378819).
Provider details
- NPI number
- 1336378819
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 68571 (MT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
615 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 190 | $15 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 170 | $89 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 140 | $133 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 48 | $106 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 108 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 199 | 66 |
| Levothyroxine Sodium | 186 | 56 |
| Atorvastatin Calcium | 171 | 47 |
| Lisinopril | 149 | 46 |
| Omeprazole | 118 | 38 |
| Amlodipine Besylate | 117 | 40 |
| Pantoprazole Sodium |
Practice location
Mailing address
Additional practice locations (2)
- 951 Matthew DrSte aWaynesboro, MS 39367-2565Phone: (601) 735-2401Fax: (601) 735-5205
- 1287 Burns WayKalispell, MT 59901Phone: (406) 752-8120Fax: (406) 752-8134
Registry dates
- Enumerated
- 2009-07-06
- Last updated
- 2020-02-13
- Certified
- 2020-02-13
Frequently asked questions
- What is Amber Mcilwain's NPI number?
- Amber Mcilwain's National Provider Identifier (NPI) is 1336378819, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Amber Mcilwain's specialty?
- Amber Mcilwain is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Amber Mcilwain located?
- Amber Mcilwain's practice location on file with NPPES is 4540 Shepherd Sq, Diamondhead, MS 39525-3325.
- What is Amber Mcilwain's phone number?
- The practice phone number listed in the NPPES registry for Amber Mcilwain is (228) 255-8216.
- Does Amber Mcilwain accept Medicare?
- Amber Mcilwain is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Amber Mcilwain's NPI active?
- Yes — Amber Mcilwain's NPI (1336378819) is active in the NPPES registry as of the last update on 2020-02-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.