NPI registry status
Active
2026 NPPES data Pain Medicine Physician NPI 1437167863 MD
Verify on CMS → Gary Baker, MD
Pain Medicine Physician in Lakewood, 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 951 in Pain Medicine 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
5K
Medicare Part D claims · 499 beneficiaries · Pain Medicine Physician avg: 2K
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
0/100
▼ 83 pts below national avg 83.1 · Penalty band
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Gary Baker, MD reported a CMS MIPS final score of 0/100 - below the 83.1 national average - and filed 5,192 Medicare Part D claims in 2023.
- 0/100
- MIPS score · -83 vs avg
- 5K
- Part D claims, 2023
- 97%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Gary Baker, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
0 0th percentile higher than 0% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Gary Baker, MD sits
This provider among pain medicine physician peers
Across the 286 pain medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Gary Baker, MD writes more Part D claims than 79% of them and scores higher on MIPS quality than 0% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one pain medicine physician peer from a representative sample of 60; the gold marker is Gary Baker, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Gary Baker, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Gary Baker, MD?
Below national averagePrimary specialty
Pain Medicine Physician
Medicare Part D claims
5,192 150% vs specialty avg
MIPS final score
0/100 83.1 pts vs avg
Specialty distribution in California
How Pain Medicine Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Gary Baker, MD's 2023 MIPS final score plotted against the Pain Medicine Physician national average
- MIPS Final Score
- 0/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Pain Medicine Physician) - 0/100 vs national avg 83.1
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).
Gary Baker, MD appears in the CMS NPPES registry as a Pain Medicine Physician provider holding MD credentials at 5750 DOWNEY AVE, Lakewood, CA, 90712, with a listed phone of (562) 408-4636. NPI 1437167863 was issued on 08/03/2006.
Medicare Part D records for calendar year 2023 show 5,192 prescription claims written by this provider, covering 499 Medicare beneficiaries and totaling roughly $200K in drug spend, split 3% brand-name and 97% generic by claim count, with an opioid prescribing rate of 35.6%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 0/100 for the 2023 performance year (Quality 0), compared with the national average of 83.1.
Pain Medicine Physician is a narrow specialty nationwide, with 951 enrolled providers across 49 states and an average of 2,078 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 | 1437167863 |
|---|---|
| Specialty | Pain Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/03/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
0
Final Score
Avg: 83.1
0
Quality
Reporting: Individual
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 Gary Baker, MD. To verify Gary Baker, 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
Gary Baker, MD - brand share 3.0%
Pain Medicine Physician average
3% brand-name claims vs 97% generic, on 5,192 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.
5,192
Total Claims
$200K
Total Drug Cost
499
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,426
- Total Day Supply
- 155,587
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $53K
- Generic Drug Cost
- $148K
- Opioid Claims
- 1,849 (35.6% rate)
Patient Demographics
- Average Patient Age
- 67.0 years
- Avg HCC Risk Score
- 1.77
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 171, 65-74: 234, 75-84: 76, 85+: 18
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gary Baker, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
940 claims
- Gabapentin
Gabapentin
451 claims
- Celecoxib 351
Celecoxib
351 claims
- Oxycodone-Acetamin… 285
Oxycodone-Acetaminophen
285 claims
- Tizanidine Hcl 251
Tizanidine Hcl
251 claims
- Cyclobenzaprine Hcl 206
Cyclobenzaprine Hcl
206 claims
- Diclofenac Sodium 198
Diclofenac Sodium
198 claims
- Pregabalin 175
Pregabalin
175 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 940 |
| Gabapentin | 451 |
| Celecoxib | 351 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 285 |
| Tizanidine Hcl | 251 |
| Cyclobenzaprine Hcl | 206 |
| Diclofenac Sodium | 198 |
| Pregabalin | 175 |
| Meloxicam | 144 |
| Omeprazole | 132 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pain Medicine Physician Overview
How Gary Baker, MD fits within the Pain Medicine Physician landscape nationally.
951
Pain Medicine Physician Providers in US
49
States with Pain Medicine Physician
2,078
Avg Claims per Provider
Gary Baker, MD's 5,192 claims are above the specialty average of 2,078.
Nearby Pain Medicine Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Baker.
Dr. Nathan Abdelsayed
M.D
West Covina, CA
Waheeda Ahmed
Fair Oaks, CA
Dr. Muhammad Alghannam
MD
Yuba City, CA
Dr. Fadi Alhatem
M.D.
Beverly Hills, CA
Dr. Emile Allen
M.D.
Oakland, CA
Compare Pain Medicine 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 Pain Medicine 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 Gary Baker, MD's specialty? ▼
Gary Baker, MD specializes in Pain Medicine Physician and practices in Lakewood, California. Credentials: MD.
How much does Gary Baker, MD prescribe under Medicare Part D? ▼
In 2023, Gary Baker, MD wrote 5,192 Medicare Part D claims totaling $200K in drug costs for 499 beneficiaries.
What is Gary Baker, MD's Medicare quality score? ▼
Gary Baker, MD has a CMS MIPS Final Score of 0/100 (Quality: 0). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Gary Baker, MD located? ▼
Gary Baker, MD is located at 5750 DOWNEY AVE, Lakewood, CA, 90712. Phone: (562) 408-4636.
What is Gary Baker, MD's NPI number? ▼
Gary Baker, MD's National Provider Identifier (NPI) is 1437167863, issued on 08/03/2006.
Does Gary Baker, MD prescribe more brand-name or generic drugs? ▼
Gary Baker, MD's prescribing is 3% brand-name and 97% generic drugs by claim count, with $53K in brand drug costs.
Does Gary Baker, MD prescribe opioids? ▼
Yes, Gary Baker, MD had 1,849 opioid claims in 2023 with an opioid prescribing rate of 35.6%.
How many Pain Medicine Physician providers are there in the US? ▼
There are 951 Pain Medicine Physician providers across 49 states in the US. The average Pain Medicine Physician provider writes 2,078 Medicare Part D claims per year.
What drugs does Gary Baker, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Gary Baker, MD's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Gabapentin, Celecoxib. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gary Baker, MD accept Medicare? ▼
Gary Baker, MD appears in CMS Medicare data with 5,192 Part D claims and 499 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gary Baker, MD's credentials? ▼
Gary Baker, MD's NPI is 1437167863 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
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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.