This hospital was converted from a roman catholic hospital into a public general hospital by 1945. The hospital is classified as a category C Hospital (registration code: 3322012) with 235 beds. It is established on Jalan Kartini no.101, Kec. Ambarawa, Kabupaten Semarang (Jawa Tengah).Coordinates: -7.23 and 110.41.
A few years ago the name of the hospital was changed into:RSUD dr.Gunawan Mangunkusumo.
The website of the hospital is https://www.rsudambarawa.semarangkab.go.id
From this website we copied a few statements on its history (Google translated and abbreviated):

Profile of RSGM Ambarawa
Ambarawa Hospital in Semarang Regency was established in 1930, owned by a Catholic Foundation during the Dutch East Indies Government, then in 1945 some of the management was handed over to the Regency Government of the Level II Region and in 1956 the whole hospital was handed over to the Level II Regional Government of Kab. Semarang.

In accordance with the Decree of the Minister of Health of the Republic of Indonesia Number: 203/Men Kes/SK/II/1993, dated February 23, 1993 and the Decree of the District Head of the Level II Region of Semarang Regency No: 203/2017/1993 Ambarawa Hospital was changed to a Type C Hospital.

The Organizational Structure and Work Procedure of the Ambarawa Hospital was first obtained in 1995, namely based on the Regional Regulation of the Semarang Level II Regional District Number 28 of 1995 concerning Guidelines for the Organizational Structure and Work Procedure of the Semarang Level II Regional General Hospital.

Based on the Decree of the District Head of the Level II Region of Semarang Number 4 of 1999 and the Approval of the Minister of Home Affairs Number 445/303/PUOD Ambarawa Hospital became a Regional Self Funding Hospital with a bed capacity of 140 TT.

Based on the Decree of the Regent of Semarang No. 4 of 2002 and Decree of the Minister of Home Affairs No. 29 of 2002 Ambarawa Hospital became a Regional Self-Dana Hospital with a bed capacity of 154 TT.

Based on the Decree of the Regent of Semarang No. 1 of 2004 the self-management of the Ambarawa Hospital was revoked, it was proposed to get a new Organizational Structure and Work Procedure.

Based on Semarang Regency Regional Regulation Number 20 of 2005 dated January 4, 2005 concerning the Organizational Structure and Work Procedure of Ambarawa Hospital with the structure of the Head of Ambarawa Hospital Echelon IIb.

In 2011 Ambarawa Hospital became a PPK-BLUD with full status based on the Decree of the Regent of Semarang Number 445/0529/2011 dated 27 October 2011 concerning Determination of the Implementation of Financial Management Patterns for the Regional Public Service Agency (PPK-BLUD) with full status.

The Ambarawa Hospital belongs to the Semarang Regency Government which is located at Jalan Kartini No.101 Ambarawa, Semarang Regency, with a land area of ​​12,000 m2. The arrangement of the existing buildings is still in the development stage to meet the rapidly growing demands for capacity and quality of service, both from the internal (health service provider) and external (visitors and patients) sides of the hospital.

The Ambarawa Regional General Hospital (RSUD) from time to time in providing services to customers runs smoothly and is increasingly gaining the trust of various parties. This condition is inseparable from the consistency of the Ambarawa Hospital in efforts to develop the Hospital based on the vision of the Ambarawa Hospital: "To become a quality, trusted and proud hospital for the community".

Ambarawa Hospital achieved the achievement of passing Accreditation 16 Services on January 3, 2012 with Certificate Number: KARS – SERT/271/1/2012. First Place in the Semarang Regency Level Excellent Service Image Contest. On November 10 2014, Ambarawa Hospital received ISO 9001:2008 accreditation for medical records, emergency room, outpatient services including perinatology and gynecology, laboratories, pharmacy, radiology, ICU, IBS, nutrition, and supporting processes.

In 2020 there was a change in the name of the Ambarawa Hospital to become Dr. Gunawan Mangunkusumo Hospital based on the Decree of the Semarang Regent Number 180 / 0094 / 2020.