NPI registry status
Active
2026 NPPES data Maternal & Fetal Medicine Physician NPI 1467411744 M.D.
Verify on CMS → John Cardin, M.D.
Maternal & Fetal Medicine Physician in Long Beach, 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 2,190 in Maternal & Fetal 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
1K
Medicare Part D claims · 184 beneficiaries · Maternal & Fetal Medicine Physician avg: 81
Generic prescribing
83%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$227.73
10 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
John Cardin, M.D. filed 1,309 Medicare Part D claims in 2024 as a Maternal & Fetal Medicine Physician in Long Beach, California, prescribing 83% generic.
- 1K
- Part D claims, 2024
- 83%
- generic prescribing
- $227.73
- industry payments (Sunshine Act)
- ≥79th
- 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 John Cardin, 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 1467411744), first enumerated 03/23/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,309 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.
- Reported
Industry payment transparency
$227.73 in reported industry payments (10 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not John Cardin, 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 1467411744 · Maternal & Fetal Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1467411744
- ENUM-LEGACY 2006
- TAX-NARROW 2,190
- RX-MID 1,309
- BOOK-THIN 224 in California
- PHOTO-ENUM Whitney Jamie, M.D. · 2006
John Cardin, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,309 ≥ 79th percentile 79% 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)
John Cardin, 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 John Cardin, M.D.?
Quality data not reportedPrimary specialty
Maternal & Fetal Medicine Physician
Medicare Part D claims
1,309 16× vs specialty avg
Specialty distribution in California
How Maternal & Fetal 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 Maternal & Fetal 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 | 1467411744 |
|---|---|
| Specialty | Maternal & Fetal Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 03/23/2006 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for John Cardin, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$228
Largest payer
SHIELD THERAPEUTICS INC
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 John Cardin, M.D.. To verify John Cardin, 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 · Typical
John Cardin, M.D. - brand share 15.0%
Maternal & Fetal Medicine Physician average
15% brand-name claims vs 83% generic, on 1,309 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.
1,309
Total Claims
$150K
Total Drug Cost
184
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,708
- Total Day Supply
- 77,204
- Brand vs Generic
- 15% brand / 83% generic
- Brand Drug Cost
- $134K
- Generic Drug Cost
- $15K
- Antibiotic Claims
- 12
Patient Demographics
- Average Patient Age
- 68.5 years
- Avg HCC Risk Score
- 1.74
- Gender Split
- 50% female / 50% male
- Age Distribution
- <65: 41, 65-74: 108, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What John Cardin, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
103 claims
- Amlodipine Besylate
Amlodipine Besylate
99 claims
- Lisinopril
Lisinopril
75 claims
- Metformin Hcl
Metformin Hcl
64 claims
- Hydrochlorothiazide
Hydrochlorothiazide
44 claims
- Furosemide
Furosemide
43 claims
- Albuterol Sulfate … 40
Albuterol Sulfate Hfa
40 claims
- Losartan Potassium 40
Losartan Potassium
40 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 103 |
| Amlodipine Besylate | 99 |
| Lisinopril | 75 |
| Metformin Hcl | 64 |
| Hydrochlorothiazide | 44 |
| Furosemide | 43 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 40 |
| Losartan Potassium | 40 |
| Famotidine | 38 |
| Gabapentin | 37 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Maternal & Fetal Medicine Physician in CA →
All providers in California →
Compare specialties →
Maternal & Fetal Medicine Physician Overview
How John Cardin, M.D. fits within the Maternal & Fetal Medicine Physician landscape nationally.
2,190
Maternal & Fetal Medicine Physician Providers in US
52
States with Maternal & Fetal Medicine Physician
81
Avg Claims per Provider
John Cardin, M.D.'s 1,309 claims are above the specialty average of 81.
Nationwide Maternal & Fetal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Cardin, 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 Maternal & Fetal Medicine Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Cardin.
One of 224 Maternal & Fetal Medicine Physician providers enrolled in California, 5 are shown here.
Dr. Alireza Abdollah Shamshirsaz
M.D.
Palo Alto, CA
Dr. Joanna Adamczak
M.D.
San Diego, CA
Dr. Michelle Adams
M.D.
Oakland, CA
Dr. Paola Aghajanian
M.D.
Los Angeles, CA
Dr. Jennifer Ahn
M.D.
San Diego, CA
Compare Maternal & Fetal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Cardin, M.D.'s specialty? ▼
John Cardin, M.D. specializes in Maternal & Fetal Medicine Physician and practices in Long Beach, California. Credentials: M.D..
How much does John Cardin, M.D. prescribe under Medicare Part D? ▼
In 2024, John Cardin, M.D. wrote 1,309 Medicare Part D claims totaling $150K in drug costs for 184 beneficiaries.
Where is John Cardin, M.D. located? ▼
John Cardin, M.D. is located at 2880 ATLANTIC AVE, Long Beach, CA, 90806. Phone: (562) 424-4404.
What is John Cardin, M.D.'s NPI number? ▼
John Cardin, M.D.'s National Provider Identifier (NPI) is 1467411744, issued on 03/23/2006.
Does John Cardin, M.D. prescribe more brand-name or generic drugs? ▼
John Cardin, M.D.'s prescribing is 15% brand-name and 83% generic drugs by claim count, with $134K in brand drug costs.
How many Maternal & Fetal Medicine Physician providers are there in the US? ▼
There are 2,190 Maternal & Fetal Medicine Physician providers across 52 states in the US. The average Maternal & Fetal Medicine Physician provider writes 81 Medicare Part D claims per year.
What drugs does John Cardin, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, John Cardin, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Cardin, M.D. accept Medicare? ▼
John Cardin, M.D. appears in CMS Medicare data with 1,309 Part D claims and 184 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Cardin, M.D.'s credentials? ▼
John Cardin, M.D.'s NPI is 1467411744 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.