2026 NPPES data Student in an Organized Health Care Education/Training Program NPI 1518132794 MD
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Leah Bowser, MD

Student in an Organized Health Care Education/Training Program in Oakland, California. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 331,761 in Student in an Organized Health Care Education/Training Program, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
3K
Medicare Part D claims · 474 beneficiaries · Student in an Organized Health Care Education/Training Program avg: 459
Generic prescribing
91%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Leah Bowser, MD filed 3,087 Medicare Part D claims in 2023 as a Student in an Organized Health Care Education/Training Program in Oakland, California, prescribing 91% generic.

3K
Part D claims, 2023
91%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.

Leah Bowser, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

3,087 Top 11% higher than 89% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2K+: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about Leah Bowser, MD?

Quality data not reported

NPI registry status

Active

Issued 04/28/2008

NPI 1518132794

Primary specialty

Student in an Organized Health Care Education/Training Program

High-volume

331,761 US NPIs in this specialty

Medicare Part D claims

3,087 vs specialty avg

2023 prescription claims

Specialty avg: 459

Specialty distribution in California

How Student in an Organized Health Care Education/Training Program compares to other specialties among California providers

California providers

Largest specialties in California (% of in-state providers)

Behavior Technician - 17.3%Behavior Technician17.3%Marriage & Family Therapist - 5.5%Marriage & Family Therapist5.5%Student in an Organized Health Care Education/Training Program - 5%Student in an Organized Health Care Education/Training Program5%Mental Health Counselor - 3.9%Mental Health Counselor3.9%Pharmacist - 3.5%Pharmacist3.5%Clinical Social Worker - 3.1%Clinical Social Worker3.1%
Largest specialties in California (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Student in an Organized Health Care Education/Training Program. Verify directly:

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

Leah Bowser, MD appears in the CMS NPPES registry as a Student in an Organized Health Care Education/Training Program provider holding MD credentials at 275 W MACARTHUR, Oakland, CA, 94611, with a listed phone of (510) 752-1000. NPI 1518132794 was issued on 04/28/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Bowser most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 3,087 prescription claims written by this provider, covering 474 Medicare beneficiaries and totaling roughly $126K in drug spend, split 8% brand-name and 91% generic by claim count, with an opioid prescribing rate of 4.0%. These figures capture only Medicare Part D, commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Student in an Organized Health Care Education/Training Program is a high-volume specialty nationwide, with 331,761 enrolled providers across 55 states and an average of 459 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

275 W MACARTHUR
Oakland, CA 94611

Provider Details

NPI 1518132794
Specialty Student in an Organized Health Care Education/Training Program
Credentials MD
Gender Female
NPI Issued 04/28/2008

Hospital and facility affiliations

Facilities where Leah Bowser, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

Permanente Medical Group Inc
Richmond, CA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context - California MBC 2023 annual report

Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Leah Bowser, MD. To verify Leah Bowser, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

Leah Bowser, MD - brand share 8.0%
Student in an Organized Health Care Education/Training Program average

8% brand-name claims vs 91% generic, on 3,087 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

3,087
Total Claims
$126K
Total Drug Cost
474
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
7,255
Total Day Supply
207,846
Brand vs Generic
8% brand / 91% generic
Brand Drug Cost
$71K
Generic Drug Cost
$53K
Opioid Claims
123 (4.0% rate)
Antibiotic Claims
79

Patient Demographics

Average Patient Age
74.7 years
Avg HCC Risk Score
1.11
Gender Split
71% female / 29% male
Age Distribution
<65: 20, 65-74: 232, 75-84: 174, 85+: 48

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Leah Bowser, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
301
Levothyroxine Sodium
130
Amlodipine Besylate
120
Losartan Potassium
105
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
96
Gabapentin
95
Alendronate Sodium
94
Sertraline Hcl
92
Lisinopril
90
Hydrochlorothiazide
71

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Student in an Organized Health Care Education/Training Program Overview

How Leah Bowser, MD fits within the Student in an Organized Health Care Education/Training Program landscape nationally.

331,761
Student in an Organized Health Care Education/Training Program Providers in US
55
States with Student in an Organized Health Care Education/Training Program
459
Avg Claims per Provider

Leah Bowser, MD's 3,087 claims are above the specialty average of 459.

Nearby Student in an Organized Health Care Education/Training Program Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Bowser.

Compare Student in an Organized Health Care Education/Training Program nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Student in an Organized Health Care Education/Training Program peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Leah Bowser, MD's specialty?
Leah Bowser, MD specializes in Student in an Organized Health Care Education/Training Program and practices in Oakland, California. Credentials: MD.
How much does Leah Bowser, MD prescribe under Medicare Part D?
In 2023, Leah Bowser, MD wrote 3,087 Medicare Part D claims totaling $126K in drug costs for 474 beneficiaries.
Where is Leah Bowser, MD located?
Leah Bowser, MD is located at 275 W MACARTHUR, Oakland, CA, 94611. Phone: (510) 752-1000.
What is Leah Bowser, MD's NPI number?
Leah Bowser, MD's National Provider Identifier (NPI) is 1518132794, issued on 04/28/2008.
Does Leah Bowser, MD prescribe more brand-name or generic drugs?
Leah Bowser, MD's prescribing is 8% brand-name and 91% generic drugs by claim count, with $71K in brand drug costs.
Does Leah Bowser, MD prescribe opioids?
Yes, Leah Bowser, MD had 123 opioid claims in 2023 with an opioid prescribing rate of 4.0%.
How many Student in an Organized Health Care Education/Training Program providers are there in the US?
There are 331,761 Student in an Organized Health Care Education/Training Program providers across 55 states in the US. The average Student in an Organized Health Care Education/Training Program provider writes 459 Medicare Part D claims per year.
What drugs does Leah Bowser, MD prescribe most often?
Based on 2023 Medicare Part D data, Leah Bowser, MD's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Leah Bowser, MD accept Medicare?
Leah Bowser, MD appears in CMS Medicare data with 3,087 Part D claims and 474 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Leah Bowser, MD's credentials?
Leah Bowser, MD's NPI is 1518132794 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology

Compiled from official public sources by the PlainDoctor editorial team.