Lydia S. Segui, PA-C

  • New Haven, CT
  • Physician assistant
NPI1508864026PAC ID7012962475
Medicare patients, 2024
114
Part D claims, 2024
248
MIPS score, 2024
100
Hospital affiliations
1
Medical group
1
Practice address
20 York Street, New Haven, CT 06510
Practice phone
Call (203) 688-5900
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Yale New Haven Psychiatric Hospital (York St)

Psychiatric Inpatient Facility · New Haven, Connecticut

See all 4 affiliations

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Lydia S. Segui is a physician assistant in New Haven, Connecticut

Lydia Segui practices at Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut.

Lydia Segui's NPI, 1508864026, was assigned on July 8, 2005. Lydia Segui holds Connecticut license 001594.

NPI and contact details
Medicare PAC ID
7012962475
NPI enumeration date
July 8, 2005
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(203) 688-5900
Professional email
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Personal email
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Mobile number
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Sex
Female
Estimated age
50
Medical school graduation
2002

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Lydia S. Segui practices at Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut

Lydia Segui's primary practice is Yale New Haven Psychiatric Hospital (York St), at 20 York Street, New Haven, CT 06510. The practice phone is (203) 688-5900.

  • Yale New Haven Psychiatric Hospital (York St)
    20 York Street, New Haven, CT 06510Phone(203) 688-5900

Source: Dmand AI Affiliation Data

Lydia S. Segui is affiliated with 3 sites of care and 1 medical group

Lydia Segui's primary practice is Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut. Lydia Segui is also affiliated with Yale New Haven Hospital. The medical group on file is Northeast Medical Group. Dmand AI also links Lydia Segui to 1 more group practice or clinic, named with a free account.

See all 4 affiliations for Lydia Segui

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Lydia S. Segui's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Lydia Segui practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Yale New Haven Psychiatric Hospital (York St)Available with a free account
+2 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Lydia S. Segui is one of 1,682 physician assistants in Connecticut

Physician assistant is Lydia Segui's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Lydia Segui is licensed in Connecticut.

Specialties and state licenses

  • Physician assistant, ConnecticutPrimaryLicense 001594 · taxonomy 363A00000X

Physician assistants near Lydia Segui

Counts of physician assistants with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Lydia S. Segui treated 114 Medicare patients in 2024, average age 74

CMS counts 114 Medicare patients who saw Lydia Segui in 2024. The largest group is 75 to 84, with 36 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 60% are also on Medicaid. Their average risk score is 2.72, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Lydia Segui's median patient age at 77, with 59% women.

Medicare patients, 2024114
Average age74
Average risk score2.72
Also on Medicaid60%

Lydia Segui's Medicare patients by age, 2024

Lydia Segui's Medicare patients by sex, 2024

  • Women7465%
  • Men4035%

Chronic conditions among Lydia Segui's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Mood disorders75%
  4. Depression69%
  5. Arthritis61%
  6. Anxiety58%
  7. Heart failure57%
  8. Diabetes53%

Share of Medicare patients with each condition. A patient can have several.

Lydia Segui's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 77

Patient panel by sex, all payers

  • Women59%
  • Men37%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Lydia S. Segui wrote 248 Medicare Part D claims in 2024

In 2024, Lydia Segui wrote 248 Medicare Part D claims for 103 patients. 92% of them were for generic drugs.

Part D claims, 2024248
Part D patients103

Lydia Segui's Part D claims by kind of drug, 2024

  • Generic227 claims92%
  • Brand-name21 claims8%

Drug classes CMS tracks in Lydia Segui's Part D claims, 2024

  • Opioids6%14 of 248 claims
  • Antibiotics25%61 of 248 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data

Lydia S. Segui scored 100 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Lydia Segui for performance year 2024, reported through an alternative payment model (APM). Lydia Segui accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Lydia Segui's MIPS scores, performance year 2024

  • 100of 100Final score
  • 86.5of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Sources for Lydia S. Segui's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Lydia S. Segui

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Lydia S. Segui's NPI number?

Lydia S. Segui's NPI number is 1508864026. It was assigned on July 8, 2005, and it is active in the NPI Registry.

What does Lydia S. Segui specialize in?

Lydia S. Segui is a physician assistant in New Haven, Connecticut. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).

Where does Lydia S. Segui practice?

Lydia Segui practices at 20 York Street, New Haven, CT 06510. Lydia Segui's primary practice is Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut. Dmand AI also links Lydia Segui to 1 group practice or clinic.

What is Lydia S. Segui's office phone number?

The practice phone on file for Lydia Segui is (203) 688-5900.

What is Lydia S. Segui's medical license number?

Lydia Segui holds Connecticut license 001594.

Which hospitals is Lydia S. Segui affiliated with?

Lydia Segui is affiliated with Yale New Haven Hospital.

What medical group is Lydia S. Segui part of?

Lydia Segui is linked to Northeast Medical Group.

Does Lydia S. Segui accept Medicare?

Yes. CMS lists Lydia Segui as accepting Medicare assignment.

What is Lydia S. Segui's MIPS score?

Lydia Segui's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).

How many Medicare patients does Lydia S. Segui see?

CMS counts 114 Medicare patients who saw Lydia Segui in 2024, with an average age of 74.

How long has Lydia S. Segui been practicing?

Lydia Segui graduated from medical school in 2002, 24 years ago.

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