NPI registry status
Active
2026 NPPES data Reproductive Endocrinology Physician NPI 1194885921 M.D., PH.D.
Verify on CMS → Alexander Quaas, M.D., PH.D.
Reproductive Endocrinology Physician in Solana 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 1,468 in Reproductive Endocrinology 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.
Industry payments
$14.0K
16 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Alexander Quaas, M.D., PH.D. is a Reproductive Endocrinology Physician in Solana Beach, California, listed in the federal CMS National Provider Identifier registry.
- $14.0K
- industry payments (Sunshine Act)
- #195
- Reproductive Endocrinology Physician rank among California specialties
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 Alexander Quaas, M.D., PH.D.
Active federal NPI registry listing — verify license, disciplinary history, and board certification with official sources before relying on this profile.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1194885921), first enumerated 12/11/2006.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
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
$14.0K in reported industry payments (16 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 Alexander Quaas, M.D., PH.D.'s individual license status. Verify directly with the state medical board.
Source: Medical Board of California annual report FY 2022-23
- 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.
Compare Quaas with other Reproductive Endocrinology Physician providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in California
- Dr. Mary Abusief, M.D. East Palo Alto, CA
- Dr. Brian Acacio, M.D. Laguna Niguel, CA
- Dr. Geoffrey Adamson, M.D. Mountain View, CA
- Dr. Jennifer Agard, M.D. Greenbrae, CA
- Dr. Zain Al-Safi, M.D. Los Angeles, CA
- Dr. Robert Anderson, M.D. Newport Beach, CA
Other specialties in Solana Beach: Physical Therapist (48) · Marriage & Family Therapist (44) · Clinical Psychologist (25) · Acupuncturist (23)
CMS NPPES provider registry desk
NPI 1194885921 · Reproductive Endocrinology Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1194885921
- ENUM-LEGACY 2006
- TAX-NARROW 1,468
- RX-NONE No Part D
- BOOK-THIN 220 in California
- PHOTO-ENUM David Schmidt, MD · 2006
◑
Board-eligible specialty (heuristic, not verified)
Alexander Quaas, M.D., PH.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 Alexander Quaas, M.D., PH.D.?
Quality data not reportedPrimary specialty
Reproductive Endocrinology Physician
Specialty distribution in California
How Reproductive Endocrinology 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 Reproductive Endocrinology 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 | 1194885921 |
|---|---|
| Specialty | Reproductive Endocrinology Physician |
| Credentials | M.D., PH.D. |
| Gender | Male |
| NPI Issued | 12/11/2006 |
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 Alexander Quaas, M.D., PH.D.. Source: openpaymentsdata.cms.gov.
Total received
$14.0K
Largest payer
Ferring Pharmaceuticals 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 Medical Board of California, FY 2022-23
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across 148,769 California physician licenses in effect in FY 2022-23 - they are NOT specific to Alexander Quaas, M.D., PH.D.. To verify Alexander Quaas, M.D., PH.D.'s current license status, use the state board's own license search (see California license lookup), or the Federation of State Medical Boards (FSMB) verification service.
374
Administrative board actions, California FY 2022-23
2.51
Actions per 1,000 physician licenses in effect
California statewide rate
Probation
Most common action type
148 actions
Source: Medical Board of California Annual Report 2022-2023, page 18 (licenses in effect: page 12). Full breakdown by action type on the California discipline page.
More Reproductive Endocrinology Physician in CA →
All providers in California →
Compare specialties →
Reproductive Endocrinology Physician Overview
How Alexander Quaas, M.D., PH.D. fits within the Reproductive Endocrinology Physician landscape nationally.
1,468
Reproductive Endocrinology Physician Providers in US
47
States with Reproductive Endocrinology Physician
118
Avg Claims per Provider
Nationwide Reproductive Endocrinology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Quaas, 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 Reproductive Endocrinology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Quaas.
One of 220 Reproductive Endocrinology Physician providers enrolled in California, 11 are shown on this page.
Helen Anglin
San Diego, CA
John Arpels
Larkspur, CA
Dr. Ramchandra Rao Ayyagari
M.D.
Bakersfield, CA
Dr. Kelly Baek
MD
Los Angeles, CA
Dr. Valerie Baker
M.D.
San Jose, CA
Compare Reproductive Endocrinology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Alexander Quaas, M.D., PH.D.'s specialty? ▼
Alexander Quaas, M.D., PH.D. specializes in Reproductive Endocrinology Physician and practices in Solana Beach, California. Credentials: M.D., PH.D..
Where is Alexander Quaas, M.D., PH.D. located? ▼
Alexander Quaas, M.D., PH.D. is located at 462 STEVENS AVE, Solana Beach, CA, 92075. Phone: (619) 685-0649.
What is Alexander Quaas, M.D., PH.D.'s NPI number? ▼
Alexander Quaas, M.D., PH.D.'s National Provider Identifier (NPI) is 1194885921, issued on 12/11/2006.
How many Reproductive Endocrinology Physician providers are there in the US? ▼
There are 1,468 Reproductive Endocrinology Physician providers across 47 states in the US. The average Reproductive Endocrinology Physician provider writes 118 Medicare Part D claims per year.
Does Alexander Quaas, M.D., PH.D. accept Medicare? ▼
Alexander Quaas, M.D., PH.D. appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alexander Quaas, M.D., PH.D.'s credentials? ▼
Alexander Quaas, M.D., PH.D.'s NPI is 1194885921 with credentials M.D., PH.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.
- 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 September 2026.