NPI registry status
Active
2026 NPPES data Critical Care Medicine Registered Nurse NPI 1134471998 FNP-BC
Verify on CMS → Mellany Esperanza, FNP-BC
Critical Care Medicine Registered Nurse in Orange, 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 6,553 in Critical Care Medicine Registered Nurse, 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
819
Medicare Part D claims · 157 beneficiaries · Critical Care Medicine Registered Nurse avg: 752
Generic prescribing
98%
generic claims · 2% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Mellany Esperanza, FNP-BC filed 819 Medicare Part D claims in 2023 as a Critical Care Medicine Registered Nurse in Orange, California, prescribing 98% generic.
- 819
- Part D claims, 2023
- 98%
- generic prescribing
- ≥73rd
- 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.
Mellany Esperanza, FNP-BC's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
819 ≥ 73rd percentile 73% of 1,370,886 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 · 2023
What does the federal data show about Mellany Esperanza, FNP-BC?
Quality data not reportedPrimary specialty
Critical Care Medicine Registered Nurse
Medicare Part D claims
819 9% vs specialty avg
Specialty distribution in California
How Critical Care Medicine Registered Nurse 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 Critical Care Medicine Registered Nurse. 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).
Mellany Esperanza, FNP-BC appears in the CMS NPPES registry as a Critical Care Medicine Registered Nurse provider holding FNP-BC credentials at 600 CITY PKWY W STE 800, Orange, CA, 92868, with a listed phone of (260) 221-7934. NPI 1134471998 was issued on 10/03/2012.
Medicare Part D records for calendar year 2023 show 819 prescription claims written by this provider, covering 157 Medicare beneficiaries and totaling roughly $26K in drug spend, split 2% brand-name and 98% generic by claim count, with an opioid prescribing rate of 36.9%.
Critical Care Medicine Registered Nurse is a mid-sized specialty nationwide, with 6,553 enrolled providers across 53 states and an average of 752 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 | 1134471998 |
|---|---|
| Specialty | Critical Care Medicine Registered Nurse |
| Credentials | FNP-BC |
| Gender | Female |
| NPI Issued | 10/03/2012 |
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 Mellany Esperanza, FNP-BC. To verify Mellany Esperanza, FNP-BC'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
Mellany Esperanza, FNP-BC - brand share 2.0%
Critical Care Medicine Registered Nurse average
2% brand-name claims vs 98% generic, on 819 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.
819
Total Claims
$26K
Total Drug Cost
157
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 833
- Total Day Supply
- 24,306
- Brand vs Generic
- 2% brand / 98% generic
- Brand Drug Cost
- $5K
- Generic Drug Cost
- $21K
- Opioid Claims
- 302 (36.9% rate)
Patient Demographics
- Average Patient Age
- 65.9 years
- Avg HCC Risk Score
- 1.54
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 54, 65-74: 79, 75-84: N/A, 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 Mellany Esperanza, FNP-BC prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
184 claims
- Gabapentin 65
Gabapentin
65 claims
- Celecoxib 63
Celecoxib
63 claims
- Tizanidine Hcl 43
Tizanidine Hcl
43 claims
- Cyclobenzaprine Hcl 39
Cyclobenzaprine Hcl
39 claims
- Pregabalin 38
Pregabalin
38 claims
- Diclofenac Sodium 36
Diclofenac Sodium
36 claims
- Zolpidem Tartrate 32
Zolpidem Tartrate
32 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 184 |
| Gabapentin | 65 |
| Celecoxib | 63 |
| Tizanidine Hcl | 43 |
| Cyclobenzaprine Hcl | 39 |
| Pregabalin | 38 |
| Diclofenac Sodium | 36 |
| Zolpidem Tartrate | 32 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 31 |
| Acetaminophen-Codeine Acetaminophen With Codeine | 25 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Critical Care Medicine Registered Nurse in CA →
All providers in California →
Compare specialties →
Critical Care Medicine Registered Nurse Overview
How Mellany Esperanza, FNP-BC fits within the Critical Care Medicine Registered Nurse landscape nationally.
6,553
Critical Care Medicine Registered Nurse Providers in US
53
States with Critical Care Medicine Registered Nurse
752
Avg Claims per Provider
Mellany Esperanza, FNP-BC's 819 claims are above the specialty average of 752.
Nearby Critical Care Medicine Registered Nurse Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Esperanza.
One of 521 Critical Care Medicine Registered Nurse providers enrolled in California, 5 are shown here.
Dr. Melanie Abbott
RN
San Diego, CA
Dr. Hadia Abdelgawad
CRNA
Stanford, CA
Dr. Patrisha Abergas
RN
Los Angeles, CA
Dr. Shahnaz Achackzad
NPC
San Jose, CA
Dr. Andrew Addley
CRNA
Sonora, CA
Compare Critical Care Medicine Registered Nurse 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 Critical Care Medicine Registered Nurse 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 Mellany Esperanza, FNP-BC's specialty? ▼
Mellany Esperanza, FNP-BC specializes in Critical Care Medicine Registered Nurse and practices in Orange, California. Credentials: FNP-BC.
How much does Mellany Esperanza, FNP-BC prescribe under Medicare Part D? ▼
In 2023, Mellany Esperanza, FNP-BC wrote 819 Medicare Part D claims totaling $26K in drug costs for 157 beneficiaries.
Where is Mellany Esperanza, FNP-BC located? ▼
Mellany Esperanza, FNP-BC is located at 600 CITY PKWY W STE 800, Orange, CA, 92868. Phone: (260) 221-7934.
What is Mellany Esperanza, FNP-BC's NPI number? ▼
Mellany Esperanza, FNP-BC's National Provider Identifier (NPI) is 1134471998, issued on 10/03/2012.
Does Mellany Esperanza, FNP-BC prescribe more brand-name or generic drugs? ▼
Mellany Esperanza, FNP-BC's prescribing is 2% brand-name and 98% generic drugs by claim count, with $5K in brand drug costs.
Does Mellany Esperanza, FNP-BC prescribe opioids? ▼
Yes, Mellany Esperanza, FNP-BC had 302 opioid claims in 2023 with an opioid prescribing rate of 36.9%.
How many Critical Care Medicine Registered Nurse providers are there in the US? ▼
There are 6,553 Critical Care Medicine Registered Nurse providers across 53 states in the US. The average Critical Care Medicine Registered Nurse provider writes 752 Medicare Part D claims per year.
What drugs does Mellany Esperanza, FNP-BC prescribe most often? ▼
Based on 2023 Medicare Part D data, Mellany Esperanza, FNP-BC'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 Mellany Esperanza, FNP-BC accept Medicare? ▼
Mellany Esperanza, FNP-BC appears in CMS Medicare data with 819 Part D claims and 157 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mellany Esperanza, FNP-BC's credentials? ▼
Mellany Esperanza, FNP-BC's NPI is 1134471998 with credentials FNP-BC. 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
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.