Question: What is the group's former name that now has an office with the Chief Actuary besides the Social Security Administration?

Context paragraphs:
Social Security Death Index: The Social Security Death Index (SSDI) is a database of death records created from the United States Social Security Administration's Death Master File Extract.  Most persons who have died since 1936 who had a Social Security Number (SSN) and whose death has been reported to the Social Security Administration are listed in the SSDI.  For most years since 1973, the SSDI includes 93 percent to 96 percent of deaths of individuals aged 65 or older.  It is frequently updated; the version of June 22, 2011 contained 89,835,920 records.

Centers for Medicare and Medicaid Services: The Centers for Medicare & Medicaid Services (CMS), previously known as the Health Care Financing Administration (HCFA), is a federal agency within the United States Department of Health and Human Services (HHS) that administers the Medicare program and works in partnership with state governments to administer Medicaid, the State Children's Health Insurance Program (SCHIP), and health insurance portability standards.  In addition to these programs, CMS has other responsibilities, including the administrative simplification standards from the Health Insurance Portability and Accountability Act of 1996 (HIPAA), quality standards in long-term care facilities (more commonly referred to as nursing homes) through its survey and certification process, clinical laboratory quality standards under the Clinical Laboratory Improvement Amendments, and oversight of HealthCare.gov.

Primary Insurance Amount: The Primary Insurance Amount (abbreviated PIA), is a component of Social Security provision in the United States.  Eligibility for receiving Social Security benefits is contingent upon the recipient: (i) having worked for at least 10 (noncontiguous) years and (ii) having paid the Federal Insurance Contributions Act (FICA) tax up to a maximum taxable earnings threshold.  For the purposes of the United States Social Security Administration, PIA is used as the beginning point in calculating the annuity payment of benefits that is provided to an eligible recipient each month during retirement until the recipient's death.  Generally, the more a person pays into the Social Security Trust Fund during their life, the higher their PIA will be.  However, specific rules in its computation may deviate from this general rule.

Ticket to Work: The United States Social Security Administration’s Ticket to Work and Self-Sufficiency Program is the centerpiece of the Ticket to Work and Work Incentives Improvement Act of 1999.  This voluntary program is designed to help people who are receiving disability benefits from Social Security "find good jobs, good careers, and better self-supporting futures."  To be eligible for the program people must be ages 18 through 64 and receive Social Security Disability Insurance (SSDI) benefits under Title II of the Social Security Act and/or Supplemental Security Income (SSI) payments under Title XVI of the Social Security Act.  The Ticket program provides these beneficiaries more choices for receiving employment and other support services they need to reach their work goal.

Office of the Chief Actuary: The Office of the Chief Actuary is a government agency that has responsibility for actuarial estimates regarding social welfare programs.  In Canada, the Office of the Chief Actuary works with the Canada Pension Plan and the Old Age Security Program.  In the United States, both the Social Security Administration and the Centers for Medicare and Medicaid Services have an Office of the Chief Actuary that deals with Social Security and Medicare, respectively.  A similar agency in the United Kingdom is called the Government Actuary's Department (GAD).

Social Security number: In the United States, a Social Security number (SSN) is a nine-digit number issued to U.S. citizens, permanent residents, and temporary (working) residents under section 205(c)(2) of the Social Security Act, codified as .  The number is issued to an individual by the Social Security Administration, an independent agency of the United States government.  Although its primary purpose is to track individuals for Social Security purposes, the Social Security number has become a "de facto" national identification number for taxation and other purposes.

Social Security Government Pension Offset: The Government Pension Offset is a statutory provision in United States law which affects benefits paid by the Social Security Administration.  It reduces spousal Social Security retirement benefits in situations where the worker did not pay Social Security tax.  (Many state and local government employees do not contribute to the Social Security system.)  This is in contrast to the Windfall Elimination Provision, which reduces Social Security benefits of the worker.

Form W-2: Form W-2 (officially, the "Wage and Tax Statement") is an Internal Revenue Service (IRS) tax form used in the United States to report wages paid to employees and the taxes withheld from them.  Employers must complete a Form W-2 for each employee to whom they pay a salary, wage, or other compensation as part of the employment relationship.  An employer must mail out the Form W-2 to employees on or before January 31.  This deadline gives these taxpayers about 2 months to prepare their returns before the April 15 income tax due date.  The form is also used to report FICA taxes to the Social Security Administration.  The Form W-2, along with Form W-3, generally must be filed by the employer with the Social Security Administration by the end of February.  Relevant amounts on Form W-2 are reported by the Social Security Administration to the Internal Revenue Service.  In territories, the W-2 is issued with a two letter code indicating which territory, such as W-2GU for Guam.  If corrections are made, it can be done on a W-2c.

Windfall Elimination Provision: The Windfall Elimination Provision (abbreviated WEP) is a statutory provision in United States law which affects benefits paid by the Social Security Administration under Title II of the Social Security Act.  It reduces the Primary Insurance Amount (PIA) of a person's Retirement Insurance Benefits (RIB) or Disability Insurance Benefits (DIB) when that person is eligible or entitled to a pension based on a job which did not contribute to the Social Security Trust Fund.  While in effect, it also affects the benefits of others claiming on the same social security record.

Death Master File: The Death Master File (DMF) is a computer database file made available by the United States Social Security Administration since 1980.  It is known commercially as the Social Security Death Index (SSDI).  The file contains information about persons who had Social Security numbers and whose deaths were reported to the Social Security Administration from 1962 to the present; or persons who died before 1962, but whose Social Security accounts were still active in 1962.  As of 2009, the file contained information on over 83 million deaths.  In 2011, some records were removed from the file.

Supporting paragraphs: Office of the Chief Actuary Centers for Medicare and Medicaid Services
Answer: Health Care Financing Administration