2026 NPPES data Clinical Genetics (M.D.) Physician NPI 1972034841 MD, PHD
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DAVID BLAIR, MD, PHD

Clinical Genetics (M.D.) Physician in SAN FRANCISCO, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
54
Medicare Part D claims · Clinical Genetics (M.D.) Physician avg: 261
Generic prescribing
6%
generic claims · 94% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
74.4657/100
▼ 9 pts below national avg 83.1 · [object Object]
What the federal data reveals: DAVID BLAIR, MD, PHD is a Clinical Genetics (M.D.) Physician ([object Object]) practicing in SAN FRANCISCO, California with a Medicare Part D prescribing footprint of 54 claims — 94% brand-name prescribing . Their CMS MIPS Final Score of 74.4657/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: DAVID BLAIR, MD, PHD reported a CMS MIPS final score of 74.4657 out of 100, below the 83.1 national average, and filed 54 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

DAVID BLAIR, MD, PHD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

DAVID BLAIR, MD, PHD at a glance

Below national average

NPI registry status

Active

Issued 03/23/2017

NPI 1972034841

Primary specialty

Clinical Genetics (M.D.) Physician

Niche

825 US NPIs in this specialty

Medicare Part D claims

54 79% vs specialty avg

2023 prescription claims

Specialty avg: 261

MIPS final score

74.4657/100 8.634299999999996% pts

Mid-tier band

vs 83.1 national avg

Specialty distribution in California

How Clinical Genetics (M.D.) Physician compares to other specialties among California providers

California providers

Clinical Genetics (M.D.) Physician share within California

1. Clinical Genetics (M.D.) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Clinical Genetics (M.D.) Physician share within California

Medicare quality performance — MIPS

DAVID BLAIR, MD, PHD's 2023 MIPS final score plotted against the Clinical Genetics (M.D.) Physician national average

Below national average
MIPS Final Score
74.4657/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Clinical Genetics (M.D.) Physician) — 74.4657/100 vs national avg 83.1

0%100%National avg83%74.5%
MIPS final score (Clinical Genetics (M.D.) Physician) — 74.4657/100 vs national avg 83.1

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).

DAVID BLAIR, MD, PHD is a Clinical Genetics (M.D.) Physician provider practicing in SAN FRANCISCO, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD, PHD. NPI: 1972034841. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

DAVID BLAIR, MD, PHD appears in the CMS NPPES registry as a Clinical Genetics (M.D.) Physician provider holding MD, PHD credentials at 550 16TH ST # 706, SAN FRANCISCO, CA, 94158, with a listed phone of (415) 476-5001. NPI 1972034841 was issued on 03/23/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BLAIR most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 54 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $379K in drug spend, split 94% brand-name and 6% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 74.4657/100 for the 2023 performance year, compared with the national average of 83.1.

Clinical Genetics (M.D.) Physician is a narrow specialty nationwide, with 825 enrolled providers across 50 states and an average of 261 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

550 16TH ST # 706
SAN FRANCISCO, CA 94158

Provider Details

NPI 1972034841
Specialty Clinical Genetics (M.D.) Physician
Credentials MD, PHD
Gender Male
NPI Issued 03/23/2017

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

74.4657
Final Score
Avg: 83.1
46.6814
Cost
76
Promoting Interoperability

Reporting: Group practice

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 DAVID BLAIR, MD, PHD. To verify DAVID BLAIR, MD, PHD'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 · Brand-heavy

DAVID BLAIR, MD, PHD — brand share 94.0%
Specialty average (est.)

94% brand-name claims vs 6% generic, on 54 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.

54
Total Claims
$379K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
56
Total Day Supply
984
Brand vs Generic
94% brand / 6% generic
Brand Drug Cost
$379K

Patient Demographics

Average Patient Age
57.0 years
Avg HCC Risk Score
3.57

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Fabrazyme
Agalsidase Beta
19
Cystadane
Betaine
15

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Clinical Genetics (M.D.) Physician Overview

How DAVID BLAIR, MD, PHD fits within the Clinical Genetics (M.D.) Physician landscape nationally.

825
Clinical Genetics (M.D.) Physician Providers in US
50
States with Clinical Genetics (M.D.) Physician
261
Avg Claims per Provider

DAVID BLAIR, MD, PHD's 54 claims are below the specialty average of 261.

Nearby Clinical Genetics (M.D.) Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as BLAIR.

Compare Clinical Genetics (M.D.) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is DAVID BLAIR, MD, PHD's specialty?
DAVID BLAIR, MD, PHD specializes in Clinical Genetics (M.D.) Physician and practices in SAN FRANCISCO, California. Credentials: MD, PHD.
How much does DAVID BLAIR, MD, PHD prescribe under Medicare Part D?
In 2023, DAVID BLAIR, MD, PHD wrote 54 Medicare Part D claims totaling $379K in drug costs for N/A beneficiaries.
What is DAVID BLAIR, MD, PHD's Medicare quality score?
DAVID BLAIR, MD, PHD has a CMS MIPS Final Score of 74.4657/100, Cost: 46.6814. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is DAVID BLAIR, MD, PHD located?
DAVID BLAIR, MD, PHD is located at 550 16TH ST # 706, SAN FRANCISCO, CA, 94158. Phone: (415) 476-5001.
What is DAVID BLAIR, MD, PHD's NPI number?
DAVID BLAIR, MD, PHD's National Provider Identifier (NPI) is 1972034841, issued on 03/23/2017.
Does DAVID BLAIR, MD, PHD prescribe more brand-name or generic drugs?
DAVID BLAIR, MD, PHD's prescribing is 94% brand-name and 6% generic drugs by claim count, with $379K in brand drug costs.
How many Clinical Genetics (M.D.) Physician providers are there in the US?
There are 825 Clinical Genetics (M.D.) Physician providers across 50 states in the US. The average Clinical Genetics (M.D.) Physician provider writes 261 Medicare Part D claims per year.
What drugs does DAVID BLAIR, MD, PHD prescribe most often?
Based on 2023 Medicare Part D data, DAVID BLAIR, MD, PHD's most frequently prescribed drugs include Fabrazyme, Cystadane. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DAVID BLAIR, MD, PHD accept Medicare?
DAVID BLAIR, MD, PHD appears in CMS Medicare data with 54 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DAVID BLAIR, MD, PHD's credentials?
DAVID BLAIR, MD, PHD's NPI is 1972034841 with credentials MD, PHD. 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

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