James Wallstrom, MD
NPI 1710927025 · Internal Medicine Physician · Pasadena, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Wallstrom, MD is a Internal Medicine Physician provider in Pasadena, CA (NPI 1710927025).
Provider details
- NPI number
- 1710927025
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G74317 (CA)
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
988 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 | 391 | $138 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 193 | $99 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 169 | $194 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 125 | $140 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 69 | $21 |
| Advance Care Planning, First 30 Minutes99497 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 85 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 169 | 42 |
| Levothyroxine Sodium | 139 | 37 |
| Tamsulosin Hcl | 129 | 26 |
| Amlodipine Besylate | 89 | 21 |
| Prednisone | 81 | 38 |
| Montelukast Sodium | 70 | 25 |
| Pantoprazole Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$206 across 5 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
- 2006-06-07
- Last updated
- 2012-01-20
Frequently asked questions
- What is James Wallstrom's NPI number?
- James Wallstrom's National Provider Identifier (NPI) is 1710927025, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Wallstrom's specialty?
- James Wallstrom is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Wallstrom located?
- James Wallstrom's practice location on file with NPPES is 50 Bellefontaine St, Pasadena, CA 91105-3132.
- What is James Wallstrom's phone number?
- The practice phone number listed in the NPPES registry for James Wallstrom is (626) 792-4115.
- Does James Wallstrom accept Medicare?
- James Wallstrom is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Wallstrom's NPI active?
- Yes — James Wallstrom's NPI (1710927025) is active in the NPPES registry as of the last update on 2012-01-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.