NPI registry status
Active
2026 NPPES data Oral & Maxillofacial Surgery (D.M.D.) NPI 1891937249 MD, DDS
Verify on CMS → Andre Guerrero Fernandes, MD, DDS
Oral & Maxillofacial Surgery (D.M.D.) in Upland, 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 1,116 in Oral & Maxillofacial Surgery (D.M.D.), 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 · 377 beneficiaries · Oral & Maxillofacial Surgery (D.M.D.) avg: 324
Generic prescribing
>99%
generic claims · <1% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Andre Guerrero Fernandes, MD, DDS filed 1,415 Medicare Part D claims in 2023 as a Oral & Maxillofacial Surgery (D.M.D.) in Upland, California, prescribing >99% generic.
- 1K
- Part D claims, 2023
- >99%
- generic prescribing
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.
Andre Guerrero Fernandes, MD, DDS's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,415 Top 20% higher than 80% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Andre Guerrero Fernandes, MD, DDS 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 Andre Guerrero Fernandes, MD, DDS?
Quality data not reportedPrimary specialty
Oral & Maxillofacial Surgery (D.M.D.)
Medicare Part D claims
1,415 337% vs specialty avg
Specialty distribution in California
How Oral & Maxillofacial Surgery (D.M.D.) 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 Oral & Maxillofacial Surgery (D.M.D.). 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).
Andre Guerrero Fernandes, MD, DDS appears in the CMS NPPES registry as an Oral & Maxillofacial Surgery (D.M.D.) provider holding MD, DDS credentials at 1333 E FOOTHILL BLVD STE 1, Upland, CA, 91786, with a listed phone of (909) 982-8888. NPI 1891937249 was issued on 04/01/2009.
Medicare Part D records for calendar year 2023 show 1,415 prescription claims written by this provider, covering 377 Medicare beneficiaries and totaling roughly $13K in drug spend, split <1% brand-name and >99% generic by claim count, with an opioid prescribing rate of 13.9%.
Oral & Maxillofacial Surgery (D.M.D.) is a narrow specialty nationwide, with 1,116 enrolled providers across 52 states and an average of 324 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 | 1891937249 |
|---|---|
| Specialty | Oral & Maxillofacial Surgery (D.M.D.) |
| Credentials | MD, DDS |
| Gender | Male |
| NPI Issued | 04/01/2009 |
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 Andre Guerrero Fernandes, MD, DDS. To verify Andre Guerrero Fernandes, MD, DDS'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
Andre Guerrero Fernandes, MD, DDS - brand share 1.0%
Oral & Maxillofacial Surgery (D.M.D.) average
<1% brand-name claims vs >99% generic, on 1,415 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.
1,415
Total Claims
$13K
Total Drug Cost
377
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,415
- Total Day Supply
- 14,041
- Brand vs Generic
- <1% brand / >99% generic
- Brand Drug Cost
- $2K
- Generic Drug Cost
- $11K
- Opioid Claims
- 196 (13.9% rate)
- Antibiotic Claims
- 393
Patient Demographics
- Average Patient Age
- 73.1 years
- Avg HCC Risk Score
- 1.13
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 40, 65-74: 188, 75-84: 105, 85+: 44
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Andre Guerrero Fernandes, MD, DDS prescribes most
Top Medicare Part D drugs by claim count, 2023
- Chlorhexidine Gluc…
Chlorhexidine Gluconate
528 claims
- Amoxicillin
Amoxicillin
306 claims
- Ibuprofen
Ibuprofen
248 claims
- Hydrocodone-Acetam… 149
Hydrocodone-Acetaminophen
149 claims
- Clindamycin Hcl 71
Clindamycin Hcl
71 claims
- Tramadol Hcl 43
Tramadol Hcl
43 claims
- Tranexamic Acid 16
Tranexamic Acid
16 claims
- Pentoxifylline 14
Pentoxifylline
14 claims
| Drug | Claims |
|---|---|
| Chlorhexidine Gluconate | 528 |
| Amoxicillin | 306 |
| Ibuprofen | 248 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 149 |
| Clindamycin Hcl | 71 |
| Tramadol Hcl | 43 |
| Tranexamic Acid | 16 |
| Pentoxifylline | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Oral & Maxillofacial Surgery (D.M.D.) in CA →
All providers in California →
Compare specialties →
Oral & Maxillofacial Surgery (D.M.D.) Overview
How Andre Guerrero Fernandes, MD, DDS fits within the Oral & Maxillofacial Surgery (D.M.D.) landscape nationally.
1,116
Oral & Maxillofacial Surgery (D.M.D.) Providers in US
52
States with Oral & Maxillofacial Surgery (D.M.D.)
324
Avg Claims per Provider
Andre Guerrero Fernandes, MD, DDS's 1,415 claims are above the specialty average of 324.
Nearby Oral & Maxillofacial Surgery (D.M.D.) Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Guerrero Fernandes.
Kimiko Agari
Los Angeles, CA
Dr. Yervant Aslanian
DDS MD
Glendale, CA
Dr. Eric Baker
DDS, MD
Dana Point, CA
Dr. Peter Balacky
DDS
Los Angeles, CA
Dr. Daniel Bandary
DDS
Los Angeles, CA
Compare Oral & Maxillofacial Surgery (D.M.D.) 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 Oral & Maxillofacial Surgery (D.M.D.) 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 Andre Guerrero Fernandes, MD, DDS's specialty? ▼
Andre Guerrero Fernandes, MD, DDS specializes in Oral & Maxillofacial Surgery (D.M.D.) and practices in Upland, California. Credentials: MD, DDS.
How much does Andre Guerrero Fernandes, MD, DDS prescribe under Medicare Part D? ▼
In 2023, Andre Guerrero Fernandes, MD, DDS wrote 1,415 Medicare Part D claims totaling $13K in drug costs for 377 beneficiaries.
Where is Andre Guerrero Fernandes, MD, DDS located? ▼
Andre Guerrero Fernandes, MD, DDS is located at 1333 E FOOTHILL BLVD STE 1, Upland, CA, 91786. Phone: (909) 982-8888.
What is Andre Guerrero Fernandes, MD, DDS's NPI number? ▼
Andre Guerrero Fernandes, MD, DDS's National Provider Identifier (NPI) is 1891937249, issued on 04/01/2009.
Does Andre Guerrero Fernandes, MD, DDS prescribe more brand-name or generic drugs? ▼
Andre Guerrero Fernandes, MD, DDS's prescribing is <1% brand-name and >99% generic drugs by claim count, with $2K in brand drug costs.
Does Andre Guerrero Fernandes, MD, DDS prescribe opioids? ▼
Yes, Andre Guerrero Fernandes, MD, DDS had 196 opioid claims in 2023 with an opioid prescribing rate of 13.9%.
How many Oral & Maxillofacial Surgery (D.M.D.) providers are there in the US? ▼
There are 1,116 Oral & Maxillofacial Surgery (D.M.D.) providers across 52 states in the US. The average Oral & Maxillofacial Surgery (D.M.D.) provider writes 324 Medicare Part D claims per year.
What drugs does Andre Guerrero Fernandes, MD, DDS prescribe most often? ▼
Based on 2023 Medicare Part D data, Andre Guerrero Fernandes, MD, DDS's most frequently prescribed drugs include Chlorhexidine Gluconate, Amoxicillin, Ibuprofen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Andre Guerrero Fernandes, MD, DDS accept Medicare? ▼
Andre Guerrero Fernandes, MD, DDS appears in CMS Medicare data with 1,415 Part D claims and 377 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Andre Guerrero Fernandes, MD, DDS's credentials? ▼
Andre Guerrero Fernandes, MD, DDS's NPI is 1891937249 with credentials MD, DDS. 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
Compiled from official public sources by the PlainDoctor editorial team.
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.