NPI registry status
Active
2026 NPPES data Pain Medicine Physician NPI 1427002526 M.D.
Verify on CMS → Muhammad Nasir, M.D.
Pain Medicine Physician in Pasadena, 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 1,006 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
10K
Medicare Part D claims · 318 beneficiaries · Pain Medicine Physician avg: 2K
Generic prescribing
90%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Muhammad Nasir, M.D. filed 10,354 Medicare Part D claims in 2024 as a Pain Medicine Physician in Pasadena, California, prescribing 90% generic.
- 10K
- Part D claims, 2024
- 90%
- generic prescribing
- ≥98th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Muhammad Nasir, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1427002526), first enumerated 05/22/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 10,354 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Muhammad Nasir, M.D.'s individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1427002526 · Pain Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-HEAVY · BOOK-THIN · PHOTO-ENUM
- NPI-10 1427002526
- ENUM-LEGACY 2006
- TAX-NARROW 1,006
- RX-HEAVY 10K claims
- BOOK-THIN 126 in California
- PHOTO-ENUM Timothy Hansen · 2006
Muhammad Nasir, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
10,354 ≥ 98th percentile 98% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Muhammad Nasir, M.D. 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 Muhammad Nasir, M.D.?
Quality data not reportedPrimary specialty
Pain Medicine Physician
Medicare Part D claims
10,354 394% vs specialty avg
Specialty distribution in California
How Pain Medicine 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 Pain Medicine 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).
Practice Address
Provider Details
| NPI | 1427002526 |
|---|---|
| Specialty | Pain Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/22/2006 |
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 Muhammad Nasir, M.D.. To verify Muhammad Nasir, M.D.'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
Muhammad Nasir, M.D. - brand share 9.0%
Pain Medicine Physician average
9% brand-name claims vs 90% generic, on 10,354 2024 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 2024.
10,354
Total Claims
$507K
Total Drug Cost
318
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 12,534.433
- Total Day Supply
- 346,454
- Brand vs Generic
- 9% brand / 90% generic
- Brand Drug Cost
- $279K
- Generic Drug Cost
- $227K
- Opioid Claims
- 1,688 (16.3% rate)
- Antibiotic Claims
- 787
Patient Demographics
- Average Patient Age
- 68.6 years
- Avg HCC Risk Score
- 1.71
- Gender Split
- 52% female / 48% male
- Age Distribution
- <65: 76, 65-74: 169, 75-84: 55, 85+: 18
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Muhammad Nasir, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
1,036 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
458 claims
- Gabapentin
Gabapentin
441 claims
- Oxycodone Hcl 396
Oxycodone Hcl
396 claims
- Amlodipine Besylate 368
Amlodipine Besylate
368 claims
- Ibuprofen 359
Ibuprofen
359 claims
- Tamsulosin Hcl 286
Tamsulosin Hcl
286 claims
- Omeprazole 281
Omeprazole
281 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 1,036 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 458 |
| Gabapentin | 441 |
| Oxycodone Hcl | 396 |
| Amlodipine Besylate | 368 |
| Ibuprofen | 359 |
| Tamsulosin Hcl | 286 |
| Omeprazole | 281 |
| Atorvastatin Calcium | 280 |
| Lisinopril | 251 |
* 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 Muhammad Nasir, M.D. fits within the Pain Medicine Physician landscape nationally.
1,006
Pain Medicine Physician Providers in US
49
States with Pain Medicine Physician
2,094
Avg Claims per Provider
Muhammad Nasir, M.D.'s 10,354 claims are above the specialty average of 2,094.
Nationwide Pain Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Nasir, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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 Nasir.
One of 126 Pain Medicine Physician providers enrolled in California, 5 are shown here.
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 →
Frequently Asked Questions
What is Muhammad Nasir, M.D.'s specialty? ▼
Muhammad Nasir, M.D. specializes in Pain Medicine Physician and practices in Pasadena, California. Credentials: M.D..
How much does Muhammad Nasir, M.D. prescribe under Medicare Part D? ▼
In 2024, Muhammad Nasir, M.D. wrote 10,354 Medicare Part D claims totaling $507K in drug costs for 318 beneficiaries.
Where is Muhammad Nasir, M.D. located? ▼
Muhammad Nasir, M.D. is located at 1403 N FAIR OAKS AVE STE 2, Pasadena, CA, 91103. Phone: (626) 798-8976.
What is Muhammad Nasir, M.D.'s NPI number? ▼
Muhammad Nasir, M.D.'s National Provider Identifier (NPI) is 1427002526, issued on 05/22/2006.
Does Muhammad Nasir, M.D. prescribe more brand-name or generic drugs? ▼
Muhammad Nasir, M.D.'s prescribing is 9% brand-name and 90% generic drugs by claim count, with $279K in brand drug costs.
Does Muhammad Nasir, M.D. prescribe opioids? ▼
Yes, Muhammad Nasir, M.D. had 1,688 opioid claims in 2024 with an opioid prescribing rate of 16.3%.
How many Pain Medicine Physician providers are there in the US? ▼
There are 1,006 Pain Medicine Physician providers across 49 states in the US. The average Pain Medicine Physician provider writes 2,094 Medicare Part D claims per year.
What drugs does Muhammad Nasir, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Muhammad Nasir, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Albuterol Sulfate Hfa, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Muhammad Nasir, M.D. accept Medicare? ▼
Muhammad Nasir, M.D. appears in CMS Medicare data with 10,354 Part D claims and 318 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Muhammad Nasir, M.D.'s credentials? ▼
Muhammad Nasir, M.D.'s NPI is 1427002526 with credentials M.D.. 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.