NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1649382920 M.D. FACP
Verify on CMS → Harold Baer, M.D. FACP
Nephrology Physician in Bakersfield, 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 10,534 in Nephrology Physician, 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
363
Medicare Part D claims · 73 beneficiaries · Nephrology Physician avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Harold Baer, M.D. FACP filed 363 Medicare Part D claims in 2023 as a Nephrology Physician in Bakersfield, California.
- 363
- Part D claims, 2023
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.
Harold Baer, M.D. FACP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
363 Top 43% higher than 57% of 1,370,886 prescribers
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
◑
Board-eligible specialty (heuristic, not verified)
Harold Baer, M.D. FACP practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Harold Baer, M.D. FACP?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
363 75% vs specialty avg
Specialty distribution in California
How Nephrology Physician compares to other specialties among California 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 Nephrology Physician. Verify directly:
How MIPS and board certification work
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).
Harold Baer, M.D. FACP appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. FACP credentials at 5030 OFFICE PARK DR., Bakersfield, CA, 93309, with a listed phone of (661) 323-2847. NPI 1649382920 was issued on 08/31/2006.
Medicare Part D records for calendar year 2023 show 363 prescription claims written by this provider, covering 73 Medicare beneficiaries and totaling roughly $39K in drug spend.
Nephrology Physician is a mid-sized specialty nationwide, with 10,534 enrolled providers across 55 states and an average of 1,454 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
Provider Details
| NPI | 1649382920 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | M.D. FACP |
| Gender | Male |
| NPI Issued | 08/31/2006 |
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 Harold Baer, M.D. FACP. To verify Harold Baer, M.D. FACP'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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
363
Total Claims
$39K
Total Drug Cost
73
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 815
- Total Day Supply
- 24,257
- Generic Drug Cost
- $18K
Patient Demographics
- Average Patient Age
- 67.8 years
- Avg HCC Risk Score
- 4.28
- Gender Split
- 37% female / 63% male
- Age Distribution
- <65: 25, 65-74: N/A, 75-84: 23, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Harold Baer, M.D. FACP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Allopurinol
Allopurinol
24 claims
- Metoprolol Tartrate
Metoprolol Tartrate
21 claims
- Doxazosin Mesylate
Doxazosin Mesylate
20 claims
- Hydralazine Hcl
Hydralazine Hcl
19 claims
- Furosemide
Furosemide
18 claims
- Famotidine
Famotidine
15 claims
- Levothyroxine Sodium
Levothyroxine Sodium
15 claims
- Prednisone
Prednisone
15 claims
| Drug | Claims |
|---|---|
| Allopurinol | 24 |
| Metoprolol Tartrate | 21 |
| Doxazosin Mesylate | 20 |
| Hydralazine Hcl | 19 |
| Furosemide | 18 |
| Famotidine | 15 |
| Levothyroxine Sodium | 15 |
| Prednisone | 15 |
| Clonidine | 13 |
| Metoclopramide Hcl | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Harold Baer, M.D. FACP fits within the Nephrology Physician landscape nationally.
10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider
Harold Baer, M.D. FACP's 363 claims are below the specialty average of 1,454.
Nearby Nephrology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Baer.
Dr. Antoine Abcar
MD
Los Angeles, CA
Dr. Basmah Abdalla
M.D.
Los Angeles, CA
Dr. Omaran Abdeen
M.D.
Mission Hills, CA
Dr. Anas Abou-Ismail
MD
Palm Springs, CA
Dr. Sreedhar Adapa
M.D.
Visalia, CA
Compare Nephrology Physician 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 Nephrology Physician 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.
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Frequently Asked Questions
What is Harold Baer, M.D. FACP's specialty? ▼
Harold Baer, M.D. FACP specializes in Nephrology Physician and practices in Bakersfield, California. Credentials: M.D. FACP.
How much does Harold Baer, M.D. FACP prescribe under Medicare Part D? ▼
In 2023, Harold Baer, M.D. FACP wrote 363 Medicare Part D claims totaling $39K in drug costs for 73 beneficiaries.
Where is Harold Baer, M.D. FACP located? ▼
Harold Baer, M.D. FACP is located at 5030 OFFICE PARK DR., Bakersfield, CA, 93309. Phone: (661) 323-2847.
What is Harold Baer, M.D. FACP's NPI number? ▼
Harold Baer, M.D. FACP's National Provider Identifier (NPI) is 1649382920, issued on 08/31/2006.
How many Nephrology Physician providers are there in the US? ▼
There are 10,534 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does Harold Baer, M.D. FACP prescribe most often? ▼
Based on 2023 Medicare Part D data, Harold Baer, M.D. FACP's most frequently prescribed drugs include Allopurinol, Metoprolol Tartrate, Doxazosin Mesylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Harold Baer, M.D. FACP accept Medicare? ▼
Harold Baer, M.D. FACP appears in CMS Medicare data with 363 Part D claims and 73 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Harold Baer, M.D. FACP's credentials? ▼
Harold Baer, M.D. FACP's NPI is 1649382920 with credentials M.D. FACP. 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
View source datasets and methodology notes
- 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.