NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1609884675 MD
Verify on CMS → Zaida Hernandez, MD
Internal Medicine Physician in Philadelphia, Pennsylvania.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,737 in Internal 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
414
Medicare Part D claims · 217 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
85.3/100
▲ 2 pts above national avg 83.5 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Zaida Hernandez, MD reported a CMS MIPS final score of 85.3/100 - above the 83.5 national average - and filed 414 Medicare Part D claims in 2023.
- 85.3/100
- MIPS score · +2 vs avg
- 414
- 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.
CMS NPPES provider registry desk
NPI 1609884675 · Internal Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-INLINE · RX-LIGHT · BOOK-MID · PHOTO-FINISH
- NPI-10 1609884675
- ENUM-LEGACY 2006
- TAX-MEGA 173K Internal Medicine
- MIPS-INLINE 85.3/100
- RX-LIGHT 414
- BOOK-MID 8,542 in Pennsylvania
- PHOTO-FINISH Charles Chipman · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Hernandez · this…
Hernandez · this provider
85.3 MIPS pts
- Harvey Harris · …
Harvey Harris
85.3 MIPS pts
- Syed Bukhari · n…
Syed Bukhari
85.3 MIPS pts
- Munira Mehta · n…
Munira Mehta
85.3 MIPS pts
- Charles Chipman …
Charles Chipman
85.3 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Zaida Hernandez, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
85 ≥ 46th percentile 46% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Zaida Hernandez, MD sits
This provider among internal medicine physician peers
Across the 34,612 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Zaida Hernandez, MD writes more Part D claims than 41% of them and scores higher on MIPS quality than 45% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one internal medicine physician peer from a representative sample of 60; the gold marker is Zaida Hernandez, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Zaida Hernandez, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - 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 Zaida Hernandez, MD?
High performer (top quartile)Primary specialty
Internal Medicine Physician
Medicare Part D claims
414 85% vs specialty avg
MIPS final score
85.3/100 1.8 pts vs avg
Specialty distribution in Pennsylvania
How Internal Medicine Physician compares to other specialties among Pennsylvania providers
Medicare quality performance, MIPS
Zaida Hernandez, MD's 2023 MIPS final score plotted against the Internal Medicine Physician national average
- MIPS Final Score
- 85.3/100
- vs 83.5 national avg · 2023 performance year
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 | 1609884675 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 08/04/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
85.272
Final Score
Measured-score avg: 83.5
62.5541
Quality
75.2953
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Zaida Hernandez, 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.
Temple Physicians Inc
Philadelphia, PA
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 - Pennsylvania PA-BOM 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 ~45K Pennsylvania medical licensees in 2023 - they are NOT specific to Zaida Hernandez, MD. To verify Zaida Hernandez, MD's current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases
PA-BOM 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 Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Zaida Hernandez, MD - brand share 3.0%
Internal Medicine Physician average
3% brand-name claims vs 97% generic, on 414 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.
414
Total Claims
$5K
Total Drug Cost
217
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 438
- Total Day Supply
- 5,342
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $369
- Generic Drug Cost
- $4K
- Antibiotic Claims
- 168
Patient Demographics
- Average Patient Age
- 66.6 years
- Avg HCC Risk Score
- 1.41
- Gender Split
- 73% female / 27% male
- Age Distribution
- <65: 69, 65-74: 91, 75-84: 44, 85+: 13
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Zaida Hernandez, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisone
Prednisone
62 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
43 claims
- Doxycycline Monohy…
Doxycycline Monohydrate
33 claims
- Methylprednisolone 21
Methylprednisolone
21 claims
- Mupirocin 18
Mupirocin
18 claims
- Amoxicillin 17
Amoxicillin
17 claims
- Azithromycin 16
Azithromycin
16 claims
- Cephalexin 13
Cephalexin
13 claims
| Drug | Claims |
|---|---|
| Prednisone | 62 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 43 |
| Doxycycline Monohydrate | 33 |
| Methylprednisolone | 21 |
| Mupirocin | 18 |
| Amoxicillin | 17 |
| Azithromycin | 16 |
| Cephalexin | 13 |
| Metronidazole | 12 |
| Estradiol | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Zaida Hernandez, MD fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Zaida Hernandez, MD's 414 claims are below the specialty average of 2,716.
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Hernandez, both outside Pennsylvania so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (85.3 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Internal Medicine Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Hernandez.
One of 8,542 Internal Medicine Physician providers enrolled in Pennsylvania, 5 are shown here.
Dr. Erin Aakhus
M.D.
Philadelphia, PA
Dr. Muhammad Aamir
MD
Allentown, PA
Dr. Saira Aamir
MD
York, PA
Dr. John Aaron
MD
West Grove, PA
Dr. Todd Aaron
MD
Philadelphia, PA
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Zaida Hernandez, MD's specialty? ▼
Zaida Hernandez, MD specializes in Internal Medicine Physician and practices in Philadelphia, Pennsylvania. Credentials: MD.
How much does Zaida Hernandez, MD prescribe under Medicare Part D? ▼
In 2023, Zaida Hernandez, MD wrote 414 Medicare Part D claims totaling $5K in drug costs for 217 beneficiaries.
What is Zaida Hernandez, MD's Medicare quality score? ▼
Zaida Hernandez, MD has a CMS MIPS Final Score of 85.3/100 (Quality: 62.6, Cost: 75.3). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Zaida Hernandez, MD located? ▼
Zaida Hernandez, MD is located at 2301 E ALLEGHENY AVE, Philadelphia, PA, 19134. Phone: (215) 926-3535.
What is Zaida Hernandez, MD's NPI number? ▼
Zaida Hernandez, MD's National Provider Identifier (NPI) is 1609884675, issued on 08/04/2006.
Does Zaida Hernandez, MD prescribe more brand-name or generic drugs? ▼
Zaida Hernandez, MD's prescribing is 3% brand-name and 97% generic drugs by claim count, with $369 in brand drug costs.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Zaida Hernandez, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Zaida Hernandez, MD's most frequently prescribed drugs include Prednisone, Amoxicillin-Clavulanate Potass, Doxycycline Monohydrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Zaida Hernandez, MD accept Medicare? ▼
Zaida Hernandez, MD appears in CMS Medicare data with 414 Part D claims and 217 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Zaida Hernandez, MD's credentials? ▼
Zaida Hernandez, MD's NPI is 1609884675 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
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 May 2026.