Michael Lowenstein, MD
NPI 1174630453 · Pain Medicine (Anesthesiology) Physician · Santa Ana, CA
Enrolled with Medicare as Practitioner - Pain Management · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Lowenstein, MD is a Pain Medicine (Anesthesiology) Physician provider in Santa Ana, CA (NPI 1174630453).
Provider details
- NPI number
- 1174630453
- Entity type
- Individual
- Primary specialty
- Pain Medicine (Anesthesiology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G66509 (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
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
1,130 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 | 605 | $132 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 224 | $97 |
| Aspiration And/Or Injection of Fluid Large Joint Using Ultrasound Guidance20611 | 110 | $104 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 57 | $171 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 39 | $59 |
| Ultrasonic Guidance for Needle Placement |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 180 | 42 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 95 | 23 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 77 | — |
| Duloxetine Hcl | 59 | — |
| Tizanidine Hcl | 55 | 15 |
| Celecoxib | 50 | — |
| Diclofenac Sodium | 47 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$481 across 7 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
- 2006-08-24
- Last updated
- 2012-11-05
Frequently asked questions
- What is Michael Lowenstein's NPI number?
- Michael Lowenstein's National Provider Identifier (NPI) is 1174630453, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Lowenstein's specialty?
- Michael Lowenstein is listed in the NPPES registry with a primary specialty of Pain Medicine (Anesthesiology) Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Lowenstein located?
- Michael Lowenstein's practice location on file with NPPES is 1901 E. Fourth Street, Suite 210, Santa Ana, CA 92705.
- What is Michael Lowenstein's phone number?
- The practice phone number listed in the NPPES registry for Michael Lowenstein is (714) 542-5999.
- Does Michael Lowenstein accept Medicare?
- Michael Lowenstein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Lowenstein's NPI active?
- Yes — Michael Lowenstein's NPI (1174630453) is active in the NPPES registry as of the last update on 2012-11-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.