Alan Mallace, MD
NPI 1659341667 · Rheumatology Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alan Mallace, MD is a Rheumatology Physician provider in Phoenix, AZ (NPI 1659341667).
Provider details
- NPI number
- 1659341667
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 9569 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
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
1,248 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 588 | $123 |
| 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 | 257 | $16 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 136 | $160 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 87 | $9 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 56 | $14 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 122 | 50 |
| Methotrexate Sodiumbrand: Methotrexate | 109 | 49 |
| Alendronate Sodium | 90 | 35 |
| Hydroxychloroquine Sulfate | 79 | 28 |
| Allopurinol | 63 | 16 |
| Meloxicam | 57 | 23 |
| Celecoxib | 51 | 19 |
| Sulindac |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$150 across 3 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
- 2006-01-23
- Last updated
- 2014-10-06
Frequently asked questions
- What is Alan Mallace's NPI number?
- Alan Mallace's National Provider Identifier (NPI) is 1659341667, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alan Mallace's specialty?
- Alan Mallace is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Alan Mallace located?
- Alan Mallace's practice location on file with NPPES is 18444 N 25th Ave, Phoenix, AZ 85023-1266.
- What is Alan Mallace's phone number?
- The practice phone number listed in the NPPES registry for Alan Mallace is (866) 974-2673.
- Does Alan Mallace accept Medicare?
- Alan Mallace is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alan Mallace's NPI active?
- Yes — Alan Mallace's NPI (1659341667) is active in the NPPES registry as of the last update on 2014-10-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.